data dictionary - definition

Create account
Where to search:
Thesaurus


Dictionaries » The Free On-line Dictionary of Computing » D »

data dictionary - definition



A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
(Non-alphabetical character)


Free Online Dictionary of Computing - FOLDOC foldoc.org

data dictionary Search for pronunciation examples


 
<database> A data structure that stores meta-data, i.e. data
about data.  The term "data dictionary" has several uses.
 
Most generally it is a set of data descriptions that
can be shared by several applications.
 
Usually it means a table in a database that stores the
names, field types, length, and other characteristics of
the fields in the database tables.
 
An active data dictionary is automatically updated as changes
occur in the database.  A passive data dictionary must be
manually updated.
 
In a DBMS, this functionality is performed by the {system 
catalog}.  The data dictionary is a more general software
utility used by designers, users, and administrators for
information resource management.
 
The data dictionary may maintain information on system
hardware, software, documentation, users, and other aspects.
 
Data dictionaries are also used to document the database
design process itself and can accumulate meta-data
ready to feed into the system catalog.
 

 
(2001-04-24)
 



Permanent link to this page: http://www.diclib.com/cgi-bin/d1.cgi?l=en&base=en_foldoc&page=showid&id=3111


Learn foreign languages chatting with us!

  • aileen, 20
    Panama, Panama
    Native language: Spanish
    Foreign language: English
    aileen
  • Elsibetty pons, 24
    Venezuela, Paraparal, Carabobo
    Native language: Spanish
    Foreign language: Spanish
    Elsibetty ...
  • sebastian, 20
    Argentina, Buenos Aires
    Native language: Spanish
    Foreign language: Spanish
    sebastian
  • ivrance, 18
    Dominican Republic, Santo Domingo
    Native language: Spanish
    Foreign language: Hindi
    ivrance
  • nissrine, 41
    Iraq, Baghdad
    Native language: Arabic
    Foreign language: English
    nissrine
  • ivmvratza, 57
    Europe, Malaga
    Native language: Bulgarian
    Foreign language: English
    ivmvratza
  • KaRo GuZmAn, 19
    El Salvador, Opico
    Native language: English
    Foreign language: Spanish
    KaRo GuZmA...
  • tania, 27
    Nicaragua, Estelã­
    Native language: Spanish
    Foreign language: English
    tania
  • Isabel, 49
    Vietnam, Ho Chi Minh City
    Native language: Spanish
    Foreign language: English
    Isabel
  • Raul, 26
    Ecuador, Quito
    Native language: Spanish
    Foreign language: Italian
    Trabajo en local de computacion, me gusta mucho mi tabajo, soy algo timido no tanto, poco, meguata hablar de temas muy profundos para la sociedad, tendo una formacion superior, me gusta el cine del genero comedia me gusta reir,
    Raul
  • Jess Guzmán, 32
    Venezuela, Carúpano
    Native language: Spanish
    Foreign language: English
    Jess Guzmá...
  • Valieri Lozhkin, 59
    Russian Federation, Uva
    Native language: Russian
    Foreign language: English, German
    Valieri Lo...
  • Alejandra, 20
    Ecuador, La Troncal
    Native language: Spanish
    Foreign language: Spanish
    HOLA ME LLAMO ALEJANDRA TENGO 16 AÑOS, HABLO SOLO ESPAÑOL Y ME GUSTARIA APRENDER HABLAR EL INGLES Y TAMBIEN ME GUSTARIA TENER MUCHOS AMIGOS
    Alejandra
  • bastian, 19
    Chile, Santiago
    Native language: Spanish
    Foreign language: Spanish
    bastian
  • tatiana chaverra, 17
    Colombia, Cali
    Native language: Spanish
    Foreign language: Spanish
    tatiana ch...
  • SAM Andres, 20
    Ecuador, Guayaquil
    Native language: Spanish
    Foreign language: English
    SAM Andres
  • Agnieszka Cojocaru, 31
    Poland, Bolkã³W
    Native language: Spanish
    Foreign language: Polish
    Agnieszka ...
  • Veronica, 41
    Argentina
    Native language: Spanish
    Foreign language: English, Italian
    Veronica
  • DanielG, 36
    India, Kodaikanal
    Native language: Spanish
    Foreign language: German
    DanielG
  • MHL
    Dominican Republic, Santo Domingo
    Native language: Spanish
    Foreign language: Spanish
    MHL