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What is a SELECT operation?
The select operation selects tuples that please a given predicate. We use the lowercase letter σ to denote selection.
What are the different kinds of database end users? Discuss the major activities of each? End-Users - End-users are the people whose jobs need access to the database for que
The database will enable college administrators the ability to track students initial major. This will help college officials decide how best to prepare students for their goals an
waht is a repeating group?
This constraint shows that the key attribute value in each tuple must be unique, i.e., no two tuples have the similar value for the key attribute. This is because the value of the
In which format database schema is written ? Data base schema is written in the DDL format.
how to construct labelled precedence graph for view serialiability.please explain insteps with one solved examples
State the Steps of Object Design Object design is a very iterative process in which various classes, relationships among objects are added when you move from one level to
Security: Data not needed by local applications is not stored at the site, therefore no unnecessary security violations may exist. But how can we carry out fragmentation? Fragm
explain various steps uses in evaluation and maintenance of MIS.
Explain Thomas' Write rule. Show how it is different from timestamp ordering protol Ans: In timestamp-based concurrency control the thomas Write rule is a rule. Given a Timest
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