Binary large object

Binary large object

A blob (alternately known as a binary large object, basic large object, BLOB, or BLOb) is a collection of binary data stored as a single entity in a database management system. Blobs are typically images, audio or other multimedia objects, though sometimes binary executable code is stored as a blob. Database support for blobs is not universal.

Blobs were originally just amorphous chunks of data invented by Jim Starkey at DEC, who describes them as "the thing that ate Cincinnati, Cleveland, or whatever".[1] Later, Terry McKiever, a marketing person for Apollo, felt that it needed to be an acronym and invented the backronym Basic Large Object. Then Informix invented an alternative backronym, Binary Large Object[2].

In fact, originally "blob" was used as a term for moving large amounts of data from one database to another without filters or error correction. This sped up the process of moving data by putting the responsibility for error checking and filtering on the new host for the data. The act of moving huge amounts of data was called "blobbing", as in the sentence, "Just blob that data over." This came about by the image of somebody grabbing fistfuls of material from one container and putting it in another without regard to what was in the "blob" they were grasping.[citation needed]

The data type and definition was introduced to describe data not originally defined in traditional computer database systems, particularly because it was too large to store practically at the time the field of database systems was first being defined in the 1970s and 1980s. The data type became practical when disk space became cheap. This definition gained popularity with IBM's DB2.[citation needed]

See also


Wikimedia Foundation. 2010.

Look at other dictionaries:

  • Binary large object — Saltar a navegación, búsqueda Los BLOB (Binary Large OBjects, grandes objetos binarios) son elementos utilizados en las bases de datos para almacenar datos de gran tamaño que cambian de forma dinámica. No todos los Sistemas Gestores de Bases de… …   Wikipedia Español

  • Binary Large Object — Le BLOB, pour (en) Binary Large OBject, est un type de donnée permettant le stockage de données binaires (le plus souvent des fichiers de type image, son ou video) dans le champ d une table d une base de données. Articles connexes CLOB …   Wikipédia en Français

  • Binary Large Object — (BLOB) very large file that demands special treatment due to its size (in sending, storage, downloading, etc.) …   English contemporary dictionary

  • Binary Large Object —   [Abk. BLOB, dt. »binäres großes Gebilde«], eine Datei (meist für Audio oder Bilddaten), die aufgrund ihrer Größe bei Aktionen wie Download, Upload oder Speichern in einer Datenbank gesondert behandelt werden muss. Diese Aufgabe übernimmt z. B.… …   Universal-Lexikon

  • Binary large object — Le BLOB, pour (en) Binary Large OBject, mais qui s écrit couramment en caractères minuscules, est un type de donnée permettant le stockage de données binaires (le plus souvent des fichiers de type image, son ou video) dans le champ d une table d… …   Wikipédia en Français

  • Binary Large Object — Binary Large Objects (BLOBs) sind große binäre Objekte wie Bild oder Audiodateien. Der Begriff wird häufig im Zusammenhang mit Open Source Projekten und Datenbanken benutzt. Freie Software und Open Source Projekte Im Rahmen des Open Source wird… …   Deutsch Wikipedia

  • Character Large Object — (CLOB) ist ein Datentyp, der verwendet wird, um sehr lange Zeichenketten in Datenbanken zu speichern. Dieser Datentyp wird in verschiedenen Datenbanksystemen unterschiedlich genannt. In Oracle und DB2 heißt er CLOB, während andere… …   Deutsch Wikipedia

  • Character large object — CLOB redirects here. For the card game, see Clob (card). For the formerly proposed securities trading system, see central limit order book. A Character Large Object (or CLOB) is a collection of character data in a database management system,… …   Wikipedia

  • Large Magellanic Cloud — The Large Magellanic Cloud Observation data (J2000 epoch) Constellation Dorado/Mensa …   Wikipedia

  • Binary star — For the hip hop group, see Binary Star (band). Hubble image of the …   Wikipedia

Share the article and excerpts

Direct link
Do a right-click on the link above
and select “Copy Link”