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What is a hash index? A hash index organizes the search keys, with their associated pointers, into a hash file structure.
What is the used of specifying alias? Specifying alias: is used to rename column or attribute in a table.
what is union compatable?
Explain the two constraints, check and foreign key in SQL along with an example for each. Give the syntax. CHECK constraint - CHECK constraint specifies an expression which
A field-groups statement or an insert statement reverses storage space and transfers values. False.
10A.53 Code an Oracle Database trigger to enforce the constraint that an employee can never change his or her department. 10A.54 Code an Oracle Database trigger to allow the
What is Relational Algebra? Relational algebra is a Procedural query Language?
What is schema
Draw an ER diagram for company''s database schema
what is Storage-Device Hierarchy question
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