Refimprove date June 2009 The Beilsteindatabase is the largest Chemical databasedatabase in the field of organic chemistry , in which compounds are uniquely identified by their Beilstein Registry Number . The database covers the scientific literature from 1771 to the present and contains experimentally validated information on millions of chemical reaction s and Chemical substance substances from original scientific publication s. The electronic database was originally created from Beilstein s Handbook of Organic Chemistry , founded by Friedrich Konrad Beilstein in 1881, but has appeared online under a number of different names, including Crossfire Beilstein. Since 2009, the content has been maintained and distributed by Elsevier Information Systems in Frankfurt under the product name Reaxys ref http www.reaxys.com info press room ref . The database contains information on reactions, substances, structures and properties. Up to 350 fields containing chemical and physical data such as melting point , refractive index etc. are available for each substance. References to the literature in which the reaction or substance data appear are also given. The Beilstein content made available through Reaxys ref cite web url http www.reaxys.com title Reaxys accessdate 4 January 2011 ref is complemented by information drawn from Gmelin which gives access to the Gmelin database Gmelin Database , a very large repository of Organometallic chemistry organometallic and inorganic chemistry inorganic information, as well as by information drawn from the Patent Chemistry Database. The Reaxys registered trademark and the database itself are owned and protected by Elsevier Properties SA and used under license. See also Dortmund Data Bank List of academic databases and search engines References ... Beilsteinova datab ze de Beilsteins Handbuch der Organischen Chemie nl Beilsteindatabase ja pl Beilstein baza danych ru sr Bajl tajnova baza podataka zh ... more details
Beilstein may refer to places in Germany Beilstein, W rttemberg , in Baden W rttemberg Beilstein, Rhineland Palatinate , in Rhineland Palatinate Beilstein, Hesse , Hesse a 2270 metre mountain of the Hochschwab Plateau , Northern Limestone Alps , Styria Friedrich Konrad Beilstein , 1838 1906, chemist the Beilsteindatabase of organic chemistry Beilstein test , halides qualitative analysis method House of Nassau Beilstein Nassau Beilstein , a branch of the House of Nassau Nassau family , based in Beilstein, Hesse disambig de Beilstein eo Beilstein fr Beilstein it Beilstein nl Beilstein pl Beilstein ru sr vo Beilstein ... more details
Expand German topic geo date July 2010 Beilstein Rh n Infobox mountain name Beilstein Rh n photo photo caption elevation m elevation ref prominence m prominence ref map location Hesse , flag Germany range lat d lat m lat s lat NS N long d long m long s long EW E coordinates type first ascent easiest route Beilstein Rh n is a mountain of Hesse , Germany . coord 50.40325 N 9.889722 E dim 5000 region DE HE DE BY type mountain 864.6 source dewiki display title Category Mountains of Hesse Hesse geo stub de Beilstein Rh n ... more details
Expand German topic geo date July 2010 Beilstein Spessart Infobox mountain name Beilstein Spessart photo photo caption elevation m 499 elevation ref prominence m prominence ref location Hesse , flag Germany range map Germany Hesse region label position left lat d 50 lat m 10 lat s 13 lat NS N long d 9 long m 24 long s 10 long EW E coordinates ref dewiki type first ascent easiest route Beilstein Spessart is a mountain of Hesse , Germany . Category Mountains of Hesse Hesse geo stub de Beilstein Spessart ... more details
Infobox Former Country native name Herrschaft Winneburg und Beilstein conventional long name Lordship of Winneburg and Beilstein common name Beilstein continent Europe region Central Europe country Germany era Middle Ages status Vassal empire Holy Roman Empire government type Principality year start 1488 event start Fiefdom of Electorate of Trier Trier date start year end 1801 event end Treaty of Lun ville Ceded to First French Republic France date end event pre Lordship founded date pre 13th century event1 Joined Lower Rhenish Westphalian Circle Westphalian br spaces 4 Imperial Circle date event1 1500 event2 County date event2 1679 event post Congress of Vienna Acquired by Kingdom of Prussia Prussia date post 1815 p1 Lorraine duchy flag p1 Blason Lorraine.svg s1 Kingdom of Prussia flag s1 Flag of Prussia 1892 1918.svg image coat Beilster.jpg capital Beilstein, Rhineland Palatinate Beilstein title leader Counts leader1 Archbishopric of Trier Archbishop of Trier year leader1 1488 1652 leader2 Metternich House of Metternich year leader2 from 1652 The Lordship of Winneburg and Beilstein was a state of the Holy Roman Empire situated on the Moselle River around Winneburg Castle near Cochem . The Lords of Winneburg were firstly mentioned in a 1304 deed, they also acquired the estates of the neighbouring Beilstein Castle in 1362. In the following decades the Lords of Winneburg and Beilstein were forced to give their lands in pawn to the Archbishopric of Trier Archbishops of Trier , who .... After the Winneburg Beilstein line had become extinct, the descendants of the Trier archbishop ... zu Beilstein and were elevated to Imperial count s in 1679. The last Count Franz George Karl lost his ... Beilstein together with the Rhineland fell to Kingdom of Prussia Prussia in 1815. Franz George ... Circle coord missing DEFAULTSORT County Of Beilstein Category 1801 disestablishments Category States ... Roman Empire Beilstein de Herrschaft Winneburg und Beilstein ... more details
Infobox German Location Name Beilstein Art Stadt image photo Castle Beilstein.JPG image caption Hohenbeilstein castle Wappen Wappen Beilstein Wuerttemberg .svg lat deg 49 lat min 2 lon deg 9 lon min 19 Lageplan Beilstein in HN.png Lageplanbeschreibung Bundesland Baden W rttemberg Regierungsbezirk Stuttgart ... 12 quarters Stra e Hauptstra e 19 Adresse Hauptstra e 19 br 71717 Beilstein Website http www.beilstein.de www.beilstein.de B rgermeister G nther Henzler Audio Beilstein.ogg Beilstein is a town ... 14 km southeast of Heilbronn . Beilstein is on the W rttemberg wine route W rttemberger Weinstra e . Geography Beilstein is situated in the south of the district of Heilbronn. The town is crossed by the S hlbach, a tributary of the Bottwar. The communal land of Beilstein includes big parts of the L wenstein Mountains. Neighbouring municipalities Neighbouring towns and municipalities of Beilstein .... Beilstein has combined with Abstatt, Ilsfeld and Untergruppenbach to form a joint association of administrations called Schozach Bottwartal . Town structure Apart from the town itself Beilstein consists ... also belong to Beilstein. The neighbouring hill Stocksberg is the highest one of the L wenstein Mountains , however, it doesn t belong to the communal land of Beilstein. There are also the hamlets ... Ages According to several documents it s presumed that Beilstein developed in Middle Ages underneath ... a city wall was built. Beilstein also was an office and residential town of the Vogt . The Reformation ... Image Burg beilstein abend.jpg thumb Hohenbeilstein Castle in the evening Thirty Years War held between ... of Wimpfen was fought near Beilstein. First complaints occurred when soldiers were quartered ... the population. The number of Beilstein s inhabitants decreased so far that there were just ... Marbach and advanced to Gro bottwar, Oberstenfeld, Beilstein and Auenstein. Beilstein was burned ... decades the town was rebuilt according to plans of architect Matthias Wei of 1693. Beilstein in the 19th ... more details
The Beilstein test is a simple chemical test used in chemistry as a qualitative data qualitative test for halides . It was developed by Friedrich Konrad Beilstein . ref cite journal author F. Beilstein title Ueber den Nachweis von Chlor, Brom und Jod in organischen Substanzen journal Ber. Dtsch. Chem. Ges. year 1872 volume 5 issue 2 pages 620 621 doi 10.1002 cber.18720050209 ref A copper wire is cleaned and heated in a Bunsen burner flame to form a coating of copper II oxide . It is then dipped in the sample to be tested and once again heated in a flame. A positive test is indicated by a green flame caused by the formation of a copper halide. The test does not detect fluorine fluorides. This test is no longer frequently used. One reason why it is not widely used is that it is possible to generate the highly toxic Polychlorinated dibenzodioxins chloro dioxins if the test material is a polychloroarene . ref cite journal author Barbara M. Scholz B ttcher, M fit Bahadir, Henning Hopf title The Beilstein Test An Unintentional Dioxin Source in Analytical and Research Laboratories journal Angewandte Chemie International Edition in English year 1992 volume 31 issue 4 pages 443 444 doi 10.1002 anie.199204431 ref An alternative wet test for halide is the sodium fusion test &mdash this test converts organic material to inorganic salts include the sodium halide. Addition of silver nitrate solution causes any halides to precipitate as the respective silver halide. References Reflist Category Chemical tests cs Beilstein v test de Beilsteinprobe fr Test de Beilstein ja no Beilsteins test ru sk Beilsteinov test sr Bajl tajnov test ... more details
Unreferenced date June 2009 The Beilstein Registry Number is a way of identifying compounds similar to the CAS registry number . It is the unique identifier for compounds in the Beilsteindatabase . Category Chemical numbering schemes chem stub ... more details
Database refimprove date December 2011 condense date November 2011 A database is an organized ... processes requiring this information for example, finding a hotel with vacancies . The term database is correctly applied to the data and their supporting data structures, and not to the database management system DBMS . The database data collection with DBMS is called a database system . The term database system implies that the data is managed to some level of quality measured in terms of accuracy ... database management system DBMS . ref name Ullman Jeffrey Ullman and Jennifer widom 1997 First course in database systems , Prentice Hall Inc., Simon & Schuster, Page 1, ISBN 0 13 861337 0. ref A general .... Well known DBMSs include Oracle Database Oracle , IBM DB2 , Microsoft SQL Server , Microsoft Access , PostgreSQL , MySQL , and SQLite . A database is not generally Software portability portable ... database bibliographic , document text, statistical, or multimedia objects. Another way is by their application ..., or insurance. The term database may be narrowed to specify particular aspects of organized collection of data and may refer to the logical database, to physical database as data content in computer data storage or to many other database sub definitions. History Database concept The database concept ... data . It has evolved together with database management systems which enable the effective handling of databases. Though the terms database and DBMS define different entities, they are inseparable a database s properties are determined by its supporting DBMS and vice versa. The Oxford English ... been unlikely that a complex information system can be built effectively without a proper database ... supported data collection needs to meet respective usability requirements broadly defined by Database Major database usage requirements the requirements below to qualify as a database. Thus, a database ... meet them or converge to meet them. Evolution of database and DBMS technology See also Database ... more details
known for Beilsteindatabase br Beilstein test education University of Heidelberg employer occupation title Friedrich Konrad Beilstein 17 February 1838 18 October 1906 , Russian name , ... pages. This handbook is now known as the Beilsteindatabase . ref name r1 cite journal title Obituary notices Friedrich Konrad Beilstein, 1838 1906 Emil Erlenmeyer, 1825 1909 Rudolph Fittig, 1835 1910 ...Infobox person name Friedrich Konrad Beilstein image Friedrich Konrad Beilstein.jpg image size caption ... author Otto N. Witt ref Life Beilstein was born in Saint Petersburg in a family of German ... became his major. For his Ph.D., Beilstein joined Friedrich W hler at the Georg August University ... . In G ttingen Beilstein began to collect the systematic notes on organic compounds which finally led to the production of his famous handbook published in Hamburg. The first edition, which Beilstein ... the proprietor of the handbook. ref name r1 In 1866 Beilstein returned to St. Petersburg where ... on isomerism of the aromatic series. In 1881 Beilstein became a member of the Russian Academy ... points out that Beilstein had favored the election of Dmitri Mendeleev , but the latter candidacy ... issue 8 ref Shortly after election Beilstein left professorship for research, compilation of his ... months per year in Europe. Beilstein remained a bachelor all his life, but adopted a daughter who ... of Friedrich Konrad Beilstein 1838 1906 journal Journal of Chemical Education year 1938 volume ... Beilstein 1838 1906 author Otto Kr tz journal Chemie in unserer Zeit volume 4 issue 4 pages 115 119 year 1970 doi 10.1002 ciuz.19700040404 cite journal author Richter, Freidrich title How Beilstein is Made ... issue 7 Persondata Metadata see Wikipedia Persondata . NAME Beilstein, Friedrich Konrad ALTERNATIVE ... OF DEATH 18 October 1906 PLACE OF DEATH Baden Baden , Germany DEFAULTSORT Beilstein, Friedrich Konrad ... Konrad Beilstein cs Friedrich Konrad Beilstein de Friedrich Konrad Beilstein es Friedrich Konrad ... more details
Unreferenced date January 2009 The Beilstein Institute for the Advancement of Chemical Sciences is a non profit foundation located in Frankfurt am Main German Beilstein Institut zur F rderung der Chemischen Wissenschaften . Founded in 1951 by the Max Planck Society , the institute is actively involved in maintaining the Beilsteindatabase and the conversion of the contents of scientific libraries into electronic media. In 2005, the institute initiated the Open access publishing open access Beilstein Journal of Organic Chemistry and in 2010 the Beilstein Journal of Nanotechnology . External links http www.beilstein institut.de Homepage http www.beilstein journals.org bjoc Beilstein Journal of Organic Chemistry http www.beilstein journals.org bjnano Beilstein Journal of Nanotechnology Category Scientific organisations based in Germany ... more details
Infobox journal title Beilstein Journal of Organic Chemistry cover discipline Organic chemistry abbreviation Beilstein J. Org. Chem. publisher Beilstein Institute for the Advancement of Chemical Sciences country Germany editor Peter Seeberger frequency history 2005 present openaccess Yes website http www.beilstein journals.org bjoc ISSN 1860 5397 LCCN 2005243875 CODEN BJOCBH OCLC 61387227 The Beilstein Journal of Organic Chemistry is a peer review peer reviewed Open access publishing open access scientific journal established by the Beilstein Institut zur F rderung der Chemischen Wissenschaften Beilstein Institute for the Advancement of Chemical Sciences , a German non profit foundation, in 2005. The editor in chief is Peter Seeberger Max Planck Institute for Colloids and Interfaces . Scientific videos are available for selected articles of the journal. Ref http www.beilstein.tv tag bjoc Website of Beilstein TV with videos for journal articles Ref References Reflist External links Official website http www.beilstein journals.org bjoc Category Chemistry journals Category Open access journals Category Publications established in 2005 Category English language journals chem journal stub fr Beilstein Journal of Organic Chemistry pl Beilstein Journal of Organic Chemistry ... more details
Infobox German Location Art Ortsgemeinde Name Beilstein Wappen Wappen Beilstein Mosel neu.png lat deg 50 lat min 6 lat sec 37.58 lon deg 7 lon min 14 lon sec 21.73 Lageplan Beilstein in COC.svg Bundesland ... Ortsb rgermeister File Beilstein BW 0.JPG thumb upright 1.5 Beilstein seen from the tower at Castle Metternich File Beilstein BW 6.JPG thumb upright 1.5 Marketplace Audio Beilstein.ogg Beilstein is an Ortsgemeinde ... . History Finds from Franks Frankish graves show that Beilstein was settled about AD 800. Beginning ... 1346 , Beilstein was granted town privileges in 1309 by Henry VII, Holy Roman Emperor Heinrich VII ... over ownership of Beilstein in 1488, it enfeoffed the Imperial Counts of Metternich with the County of Beilstein Lordship of Winneburg and Beilstein . In 1689 came the destruction of Castle Metternich ... Beilstein was assigned to the Kingdom of Prussia at the Congress of Vienna . Since 1946, it has ... ergebnisse 1350100700.html Wahlergebnisse Beilstein auf wahlen.rlp.de, gesehen 22. Juli 2009 ref . Mayor Beilstein s mayor is Eugen Herrmann. Coat of arms Beilstein s old Coat of arms arms , adopted ... File Wappen Beilstein Mosel neu.png New arms gallery Culture and sightseeing Sightseeing The small ... after their short time as Beilstein s lords after the Thirty Years War and shortly thereafter taken to France , only to be brought back to Beilstein in 1950. The organ music organ in the monastery ..., the Beilsteiner M rchensommer Beilstein Fairy Tale Summer is held, at which the marionette theatre ... Directory of Cultural Monuments in Cochem Zell district ref . Beilstein in film The municipality has .... Further reading Alfons Friderichs, Karl Josef Gilles Beilstein an der Mosel . Rheinisches Kunstst ttenheft ... content titleinfo 115419 Schaefer, Johann Matthias Hrsg. Beitrag zur Lokal Geschichte Beilstein s a M ... gallery File Beilstein BW 1.JPG Way into the village on the Moselle File Beilstein BW 3.JPG Old tollhouse File Beilstein BW 7.JPG Tithe house File Beilstein BW 12.JPG Klostertreppe File Burg Metternich ... more details
infobox nobility name Catherine of Nassau Beilstein image caption noble family House of Nassau father Henry II, Count of Nassau Beilstein mother Catherine of Randerode spouse Reinhard II, Count of Hanau birth date birth place death date death date 1459 9 6 df y death place burial place Church of St. Mary in Hanau Catherine of Nassau Beilstein died 6 September 1459 was the daughter of Count Henry II, Count of Nassau Beilstein Henry II of Nassau Beilstein ref For details about her father, see Pierre Even Dynastie Luxemburg Nassau. Von den Grafen zu Nassau zu den Gro herz gen von Luxemburg. Eine neunhundertj hrige Herrschergeschichte in einhundert Biographien , Luxemburg, 2000, p. 83 ref and his wife, Catherine of Randerode. By marriage, she was a Countess of Hanau. Marriage and issue She married on 18 January 1407 to Lord Reinhard II, Count of Hanau Reinhard II of Hanau , who was raised to Count of Hanau in 1429. They had the following children Catherine of Hanau Catherine 1408 1460 , married in 1421 with Count Thomas II of Rieneck 1408 1431 between 1432 and 1434 with Count William II, Count of Henneberg Schleusingen William II of Henneberg Schleusingen 1415 1444, died in a hunting accident Anna born 15 June 1409 , after 1439 abbess of the Patershausen monastery Margaret of Hanau Margaret 1411 1441 , married in 1440 with Gottfried VIII of Lords of Eppstein Eppstein d. 1466 Reinhard III, Count of Hanau Reinhard III 1412 1452 , succeeded his father in 1451 as ruler of the County of Hanau Elisabeth of Hanau 1416 1446 Elisabeth 1416 1446 , married on 4 May 1432 with Wild and Rhinegrave John IV of Dhaun 1422 1476 Philip I, Count of Hanau Lichtenberg Philip I the Elder 1417 1480 , founder ..., 1919, reprinted 1978 Translation Ref de Katharina von Nassau Beilstein Germany hist stub Germany noble stub Footnotes references Persondata NAME Catherine of Nassau Beilstein ALTERNATIVE NAMES Catherine ... Nassau Beilstein ... more details
The Gmelin database is a large Chemical databasedatabase of Organometallic chemistry organometallic and Inorganic chemistry inorganic compounds updated quarterly. It is based on the German publication the Gmelins Handbuch der anorganischen Chemie Gmelin s handbook on inorganic chemistry written by Leopold Gmelin in 1887, and currently contains 1.5 million compounds and 1.3 million different reactions. The latest version contains every compound reaction discovered between 1772 and 1995, with over 85,000 titles, keywords and abstracts, and is maintained by Elsevier MDL . The database has over 800 different data fields on subjects such as the compounds electric, magnetic, thermal, crystal and physiological information. It is the sister database to the Beilsteindatabase , which deals with organic chemicals and reactions. Access is part of the Reaxys system. External links http www.ul.ie library irel beilsteingmelin.htm University of Limerick http www.mimas.ac.uk crossfire ov gmelin.html MIMAS national data center Category Chemical databases Category Inorganic chemistry Category Organometallic chemistry de Gmelins Handbuch der anorganischen Chemie sr Gmelin baza podataka zh ... more details
infobox nobility name Henry II, Count of Nassau Beilstein image caption noble family House of Nassau father Henry I, Count of Nassau Beilstein mother Imagina of Westerburg spouse Catherine of Randerode birth date birth place death date 1410 death place Henry II, Count of Nassau Beilstein d. 1510 was the eldest son of Henry I, Count of Nassau Beilstein Henry I and his wife, Imagina of Westerburg. He succeeded his father in 1388 as Count of Nassau Beilstein and ruled jointly with his younger brother Reinhard, Count of Nassau Beilstein Reinhard . In 1383, Henry married Catherine of Randerode. They had three children Catherine of Nassau Beilstein Catherine d. 1459 , married in 1407 to Reinhard II, Count of Hanau John I, Count of Nassau Beilstein John I d. 1473 William d. 1430 Henry III, Count of Nassau Beilstein Henry III d. 1477 Translation Ref nl Hendrik II van Nassau Beilstein Germany noble stub S start S hou House of Nassau 1410 S bef before Henry I, Count of Nassau Beilstein Henry I S ttl title House of Nassau Count of Nassau Beilstein years 1388 1410 with Reinhard, Count of Nassau Beilstein Reinhard S aft after Reinhard, Count of Nassau Beilstein Reinhard S end Category Counts of Nassau Category House of Nassau Category 13th century births Category Year of birth unknown Category 1410 deaths Category German nobility Category 13th century German people Category 14th century German people nl Hendrik II van Nassau Beilstein ... more details
infobox nobility name John III, Count of Nassau Beilstein image caption noble family House of Nassau father John II, Count of Nassau Beilstein mother Maria of Soms Braunfels spouse Anna of Nassau Weilburg birth date 1490 birth place death date death date 1561 12 11 df y death place John III, Count of Nassau Beilstein 1490 &ndash 11 December 1561 was a son of John II, Count of Nassau Beilstein John II and his wife Maria of Soms Braunfels. In 1513, he succeeded his father as Count of Nassau Beilstein. In 1523, he married Anna 1505 1564 , a daughter of Louis I, Count of Nassau Weilburg Louis I 1473 1523 of Nassau Weilburg and Margaret of Nassau Wiesbaden 1487 1548 . He died on 11 December 1561. As he had no male heir, Nassau Beilstein fell back to Nassau Dillenburg. S start S hou House of Nassau 1490 11 December 1561 S bef before John II, Count of Nassau Beilstein John II S ttl title House of Nassau Count of Nassau Beilstein years 1513 1561 S aft after Henry III of Nassau Breda Henry III as Count of Nassau Dillenburg S end Translation Ref nl Johan III van Nassau Beilstein Germany noble stub Category House of Nassau Category Counts of Nassau Beilstein Category 1490 births Category 1561 deaths Category German nobility Category 16th century German people nl Johan III van Nassau Beilstein ... more details
infobox nobility name Henry I, Count of Nassau Beilstein image caption noble family House of Nassau father Henry, Count of Nassau in Siegen mother Adelaide of Heinsberg Blankenberg spouse Meyna of Westerburg birth date 1307 birth place death date 1388 death place Henry I, Count of Nassau Beilstein 1307 1388 was a son of Henry, Count of Nassau in Siegen Henry I of Nassau Siegen and his wife, Adelaide of Heinsberg Blankenberg. His parents had initially destined him for an ecclesiastical career. However, he later married Meyna of Westerburg and after his father s death became the first count of Nassau Beilstein. Henry and Meyna had three children Henry II, Count of Nassau Beilstein Henry II , his successor Reinhard d. 1412 Adelaide, married Hartmuth of Cronberg. Translation Ref nl Hendrik I van Nassau Beilstein Germany noble stub S start S hou House of Nassau 1307 1388 S bef before Henry, Count of Nassau in Siegen Henry I as Count of Nassau Siegen S ttl title House of Nassau Count of Nassau Beilstein S aft after Henry II, Count of Nassau Beilstein Henry II S end Category Counts of Nassau Category House of Nassau Category 1307 births Category 1388 deaths Category German nobility Category 14th century German people de Heinrich I. Nassau Beilstein fr Henri Ier de Nassau Beilstein nl Hendrik I van Nassau Beilstein ... more details
Chemical Identifier InChI . See also Beilsteindatabase and Dortmund Data Bank BindingDB ChEBI ChEMBL ChemSpider Comparative Toxicogenomics Database Computational Chemistry List DrugBank List of software for molecular mechanics modeling LOLI database NMR spectra database PubChem SPRESI database http www.echemportal.org eChemportal References Reflist External links Database and registration ...A chemical database is a database specifically designed to store cheminformatics chemical information ... taking terabytes of physical memory. Literature database Chemical literature databases correlate .... This type of database includes Chemical Abstracts Service Products STN and Chemical Abstracts Service ... characterization. Crystallographic database Crystallographic databases store x ray crystal structure data. Common examples include Protein Data Bank and Cambridge Structural Database . NMR spectra database NMR spectra database s correlate chemical structure with NMR data. These databases often include other characterization data such as FTIR and Mass Spec . Reactions database Most chemical databases ..., educts, and reaction mechanism s. Thermophysical database Thermophysical data are information ... in the database molecules. Another kind of key makes use of hash value hash code s based on fragments ... a bad choice as a primary key defining database key . While physico chemical descriptors ... databases. Registration systems usually enforce uniqueness of the chemical represented in the database ... and a simple chemical database is the ability to accurately represent that which is known, unknown, and partially known. For example, a chemical database might store a molecule with stereochemistry ... either within the database system itself or as is now the trend is implemented as external components that fit into standard relational database systems. Both Oracle and PostgreSQL based systems ... Cartridge Java and .NET database management and search toolkits from ChemAxon http www.chemaxon.com ... more details
Database state may refer to Database state, in database technology the set of stored data. Entering, modifying, or deleting information changes the database state. A state that practices Mass surveillance . disambig ... more details
Protein database may refer to Any protein structure database Any protein sequence database Exact names Protein NIH Protein database of the National Institute of Health Protein Database of Bio Synthesis, Inc. disambig ... more details
A database machine or back end processor is a computer or special hardware that stores and retrieves data from a database . It is specially designed for database access and is coupled to the main front end computer s by a high speed channel. This contrasts with a database server , which is a computer in a local area network that holds a database. The database machine is tightly coupled to the main CPU , whereas the database server is loosely coupled via the network. An example is the IBM System 38 . Database FOLDOC Category History of computing Category Databases compu hardware stub ... more details
A Centralized database is a database located and maintained in one location, unlike a distributed database . One main advantage is that all data is located in one place. The disadvantage is that bottlenecks may occur. database stub web stub Category Types of databases ... more details
A negative database , in Credit Card terms, refers to a list of Credit Card owners who chargeback a lot. Negative databases are usually maintained by Credit Card companies. The term negative database also refers to a security concept in database terms where contrary to traditional databases, such database saves attributes that cannot be associated with a certain entry. http sigfpe.blogspot.com 2006 10 negative databases.html http www.economist.com science displayStory.cfm?story id 7854216 Database Category Credit cards Category Database security econ stub database stub ... more details
NMR database NMR nuclear magnetic resonance may refer to NMR spectra database , a collection of NMR spectra for a large number of compounds NMR database method , a strategy to identify the stereochemistry of certain chiral compounds dab ... more details
Encyclopedia
top
