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data dictionary - translation to greek
SET OF METADATA THAT CONTAINS DEFINITIONS AND REPRESENTATIONS OF DATA ELEMENTS
Data Dictionary; Data Dictionaries; Data Description Specifications; Data element dictionary; Data description specification
data dictionary
λεξικό δεδομένων
data transfer
PHYSICAL TRANSFER OF DATA; TRANSFER OF DATA (A DIGITAL BIT STREAM OR A DIGITIZED ANALOG SIGNAL) OVER A POINT-TO-POINT OR POINT-TO-MULTIPOINT COMMUNICATION CHANNEL
Data communications; Data transfer; Digital communications; Digital Telecommunications; Digital communication; Data Transfer; Asynchronous transmission; Information transmission; Digital transmission; Network Transmission; Asynchronous data transfer; Data Communications; Data signal; Asynchronous data transmission; Synchronous data transfer; Synchronous data transmission; Transmitted Data; Digital signal (communications); Digital telecommunications; Digital telecommunication; Comms; Digital Communication; Data reception; Data transmission; TxD
μεταφορά δεδομένων
data communication
PHYSICAL TRANSFER OF DATA; TRANSFER OF DATA (A DIGITAL BIT STREAM OR A DIGITIZED ANALOG SIGNAL) OVER A POINT-TO-POINT OR POINT-TO-MULTIPOINT COMMUNICATION CHANNEL
Data communications; Data transfer; Digital communications; Digital Telecommunications; Digital communication; Data Transfer; Asynchronous transmission; Information transmission; Digital transmission; Network Transmission; Asynchronous data transfer; Data Communications; Data signal; Asynchronous data transmission; Synchronous data transfer; Synchronous data transmission; Transmitted Data; Digital signal (communications); Digital telecommunications; Digital telecommunication; Comms; Digital Communication; Data reception; Data transmission; TxD
επικοινωνία δεδομένων
Definition
data dictionary
<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.
[Does anybody call them "codebooks"? ]
(2001-04-24)
Wikipedia
Data dictionary
A data dictionary, or metadata repository, as defined in the IBM Dictionary of Computing, is a "centralized repository of information about data such as meaning, relationships to other data, origin, usage, and format". Oracle defines it as a collection of tables with metadata. The term can have one of several closely related meanings pertaining to databases and database management systems (DBMS):
- A document describing a database or collection of databases
- An integral component of a DBMS that is required to determine its structure
- A piece of middleware that extends or supplants the native data dictionary of a DBMS
