What is the job of the information stored in data-dictionary?

1 Answer

Answer :

The information in the data dictionary validates the existence of the objects, provides access to  them, and maps the actual physical storage location.

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Description : Where the integrity constraints are stored in Data Dictionary ?

Last Answer : The integrity constraints are stored in USER_CONSTRAINTS.

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Last Answer : DICT or DICTIONARY

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Last Answer : Data dictionary is a set of tables and database objects that is stored in a special area of the database and maintained exclusively by the kernel.

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Last Answer : Dictionary cache is information about the databse objects stored in a data dictionary table.

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Last Answer : DBA_FREE_SPACE DBA_SEGMENTS DBA_DATA_FILES.

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Last Answer : DBA_FREE_SPACE DBA_SEGMENTS DBA_DATA_FILES.

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Last Answer : A stored procedure is a sequence of statements that perform specific function.

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Last Answer : Extensibility,Modularity, Reusability, Maintainability and one time compilation.

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Last Answer : User_objects, User_Source and User_error.

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Last Answer : Don't grant user access directly to tables within the application. Instead grant the ability to access the procedures that access the tables. When procedure executed it will execute the privilege of procedures owner. Users cannot access tables except via the procedure.

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Last Answer : No

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Last Answer : ALTER DATABASE DATAFILE RESIZE ;

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Last Answer : Yes

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Last Answer : Yes

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Last Answer : Yes

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Description : What is a data segment?

Last Answer : Each non-clustered table has a data segment. All of the table's data is stored in the extents of its data segment. Each cluster has a data segment. The data of every table in the cluster is stored in the cluster's data segment.

Description : How to define data block size?

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Last Answer : CHAR,VARCHAR2,NUMBER,DATE,RAW,LONG and LONG RAW.

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