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Differentiate between a Global and a Local temporary table?
- A local temporary table exists only for the duration of a connection or if defined inside a compound statement, for the duration of compound statement.
- Global temporary tables (created with a double "##") are visible to all sessions.
- Global temporary tables are dropped when the session which created it ends and all other sessions have stopped referencing it.
What are the reasons of bucket overflow? Explain any two methods for solving this problem. Ans: It is general for file structures to be divided into equal-length partitions, k
Write short notes on domain relational calculus The domain relational calculus uses domain variables that take on values from an attribute domain rather than values for whole
Problem: (a) Briefly explain the ‘Hierarchical Database Model' using appropriate diagram. (b) List and briefly describe five potential benefits of the database approach comp
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Consider entity type Employee with attributes empNumber (this is unique), empName, and the year when he/she was hired. An employee can either be a technical employee, a marketing e
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Differentiate between Key and superkey? Key and superkey - A key a single attribute or a combination of two or more attributes of an entity set in which is used to identify o
Hierarchical model is also known by? A hierarchical model is also known as a Tree structure.
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