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In which form of relational database developer refers to a record?In a tuple form of relational database developer refers to a record.
What is trigger Triggers are statements that are implemented automatically by the system as the side effect of a change to the database.
a publishing company produce scientific books on various subjects. the books are written by authors who specialize in one particular subject. the company employs editors who, not n
For each 1: n relationship type R involving two entities E1 and E2, we recognize the entity type (say E1) at the n-side of the relationship type R and contain primary key of the en
Explain natural join? Natural Join - Similar as equi-join except in which the join attributes (having similar names) are not involved in the resulting relation. Only one sets
Describe Database state in details? Database state: The actual data within the database at a particular moment in time is known as a database state.
discuss the purpose of the concurrency control?
What are the two main goals of parallelism? Load -balance multiple small accesses, so that the throughput of such accesses enhances. Parallelize large accesses so that the res
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Which model is record based logical model? Network Modelis basically known as record based logical model.
What is multiple relationship ?
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