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Explain the Weak Entity Set
An Entity set which does not have sufficient attribute to make a primay key is known as weak entity set. For instance, dependents of an employee in an organization do not comprise an identifying attribute.
Explain the Static or conservative Two Phase Locking: Static (or conservative) Two Phase Locking: In this type of scheme, all the data items are locked earlier than any opera
Using the questions found at the end of Chapter 9 in your textbook, complete this homework activity. Students will submit a Word document answering questions 2, 3, and 4.
Which operation is used if we are interested in only certain columns of a table? PROJECTION operation is used if we are interested in only certain columns of a table.
Define the terms i) Key attribute ii) Value set Key attribute: An entity type usually has an attribute whose values are exact from each individual entity in the collection. Su
An important first step to the statistical analysis of data is to "get to know your data". The following tasks should contribute to this. (a) To the right of the dataset cons
The physical location of a record is determined by which mathematical formula that transforms a file key into a record location? The physical location of a record is determined
Normal 0 false false false EN-US X-NONE X-NONE
what is RDBMS? how it works? good example.
What is a hash index? A hash index organizes the search keys, with their associated pointers, into a hash file structure.
What are the storage types? The storage types are: a) Volatile storage b) Nonvolatile storage
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