How to use Data Dictionary Views In SQL
Oracle provides a rich set of data dictionary views containing metadata about database objects. These views are invaluable for retrieving information about databases, tablespaces, users, and objects. Here are some commonly used views:
- DBA_DATA_FILES: It Gives information about data files, such as tablespace, file name, and size.
- DBA_TABLESPACES: It Contains information about tablespaces, like their name, size, and the way of extent management.
- DBA_USERS / ALL_USERS: It Provides information about database users, such as their usernames, roles, and default tablespaces.
- ALL_OBJECTS: It Contains details of database objects accessible to the current user, which include their names, types, and owners.
How to Show Database in PL/SQL
PL/SQL is the Procedural Language/Structured Query Language and serves as a procedural language built-in extension to SQL language, which allows seamless integration of procedural constructs with SQL. One of the most common functions of a DBMS is the retrieval of information about databases which is fundamental for administrators and programmers alike.
In this manual, we will explain how to perform database display via PL/SQL, including methods for retrieving information on PDBs, users, and objects.