please answer me., Database Management System

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When are they useful? Justify with an example. The temporary tables are commonly used to support specialized rollups or exact application processing needs. Unlike a permanent t

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What is trigger?  Triggers are statements that are executed automatically by the system as the side effect of a modification to the database.

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What is a security? Securities are claims on financial assets.  They can be illustrated as "claim checks" which give their owners the right to receive funds in the future.  Sec

What are audit trails, What are audit trails? An audit trail is a log o...

What are audit trails? An audit trail is a log of all alters to the database along with information like which user performed the change and when the alter was performed.

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What are the two approaches to store relations in distributed database? a) Replication b) Fragmentation

Draw enhanced er-diagram for hierarchy of a student database, Draw an EER d...

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