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Which language used in application programs to request data from the DBMS is referred? Language which is used in application program is DML to request data from the DBMS is ref
Components of database manager The above functions are reached by the database manager. The major elements of a database manager are: Authorisation control: This mod
difference between internal schema and external schema in DBMS
What are called multilevel indices? Indices with two or more levels are known as multilevel indices.
System level permissions : With the use of data dictionary you can view them. Let us take the table name as user_sys_privs (used in oracle). DESCRIBE USER_SYS_PRI
Describe the types of attributes? Types of attributes: An attribute's category determines the type of values that are permitted in the attribute. For instance, the value vers
What subschema expresses ? A subschema expresses the external view. (External schemas are called also called as subschemas)
What is known as a search key? An attribute or set of attributes used to look up records in a file is known as a search key.
Identify the need and use of data control through problem solving, illustration
What is a recursive relationship? Give an example not used in the text. A recursive relationship is a relationship among an entity and itself. For example, given the entity PER
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