The information schema is a read-only table in a relational database that contains metadata about the database. It is accessed using non-standard commands and behaves like a separate database, but cannot be modified.
The information schema in a relational database is a separate table that documents information about the database itself. This background information covers many different aspects of the relational database; includes table, row, column, and record data; and helps database designers control this information. While this is part of the relational database, the information schema acts as a separate database, although the schema is not generated as a separate database when placed on a server. While this schema is a standard used by database designers, it is commonly accessed from non-standard prompts. All information in this schema is read-only, so users cannot change or manipulate the data from the schema.
Databases contain so much information that most of it is usually impossible to read without assistance. If database designers want to view the metadata or information behind the database, they can use information schema. View most of the information within the database, such as the number of tables, record names, or column and row titles. Although the schema looks like a table, it is a view, which means no files are linked to it.
This schema acts very differently from the other shapes in the database. The information schema, because of the way it holds and displays information, behaves like a separate database when users view the schema. At the same time, editing limitations mean that it doesn’t behave like a traditional database. Unlike a traditional database, which can be built when placed on a server, the information schema is not built on a server. This means that the information schema can only be accessed when viewed from a database program, not from the server.
There are many database standards for security and stability and information schema is one of these standards. This means that all relational databases, regardless of who created them, should contain this feature. At the same time, non-standard commands are used to access the schema, which differentiates it from most other database standards. For example, the “show” and “describe” commands are used to display the schema, depending on the database model, even though they are not standard commands.
No changes and modifications from the information schema are allowed, because it is set to read-only. This means that users can only read data from the schema; they cannot perform any functions on the information. Regardless of the permission level of users, be they administrators or even database designers, there is no way to change it, as of 2011.
Protect your devices with Threat Protection by NordVPN
