Breaking News: Grepper is joining You.com. Read the official announcement!

database metadata

Innocent Iguana answered on December 1, 2022 Popularity 9/10 Helpfulness 3/10

answer database metadata

related what is metadata

database metadata

Comment

RDBMS store their meta-data (like name of tables, column data-types etc) in:
- System database
- System schema
- Catalog
- Directory
You can query the metadata tables to discover information about the objects in db
Different RDBMS use different names for their metadata store:
- DB2 uses:
	1. catalog : Information about Tables and Permissions
    2. directory : Information about Control data, Recovery data
- MySQL uses: Have read-only tables in each schema
	1. Information_Schema : 
    2. MySQL:
    3. Performance_Schema:
    4. sys:
- PostgreSQL uses
	1. System Catalog: Schema with tables and views about all other data in database

Other meta-data:
Configuration files: contains information of DBMS you specify during the DBMS
installation in (.conf, .nfg, .ini) extension files. They contain configuration
parameters like port number, connection time-out, memory allocation, maximum
packet size etc
- DB2 has SQLDBCONF file
- MySQL has my.ini, my.cnf files
- PostgreSQL has postgresql.conf file

Popularity 9/10 Helpfulness 3/10 Language whatever

Source: Grepper

Tags: database-metadata whatever

Link to this answer
Share Copy Link

Contributed on Feb 22 2023

Innocent Iguana

0 Answers Avg Quality 2/10

Closely Related Answers

what is metadata

Comment

Metadata is data providing information about other data.
For example, when working with databases, the data stored inside the
database is the actual data, while the structure of tables and relations
between them is metadata. In programming, metadata describes types used in
an application. We can access it in the runtime using reflection, to get the
information about some type, for example, what methods or what constructors
it contains.

Popularity 10/10 Helpfulness 2/10 Language whatever

Source: Grepper

Tags: metadata metadat

Link to this answer
Share Copy Link

Contributed on Dec 01 2022

Rasel Ahmed

0 Answers Avg Quality 2/10

database metadata

Contents

More Related Answers

database metadata

Closely Related Answers

what is metadata

Grepper

Documentation

Social

Legal

Contact

Oops, You will need to install Grepper and log-in to perform this action.