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Describe the four main ways of optimising disk block access. Ans: a. Disk b. Non-volatile writes buffers c. File organization (Clustering) d. Log-based file system
Type of views : Simple views and Difficult Views Feature Simple Views Complex Views Number of tables One
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.
A constraint named less_than_20 was defined on the field date_of_birth of table student. Delete this constraint. ALTER TABLE student DROP CONSTRAINT less_than_20;
What is RDBMS terminology for a row? A tuple is a RDBMS terminology for a row
why three level architecture had been developed/
Submission Requirements All answers must be computer generated (including text and diagrams). The hand-in version must include a header page (or with sufficient space)
We define a view in SQL through using the create view command. To describe a view, we must provide the view a name and must state the query in which computers the view. The form of
Define Two phase commit Two phase commit: To make sure atomicity, all the sites where a transaction is being executed must agree on the final outcome of the execution. The tran
how to implement hyrise in C plus plus
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