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Explain the Cascadeless Schedule
A cascadeless schedule is one in which for every pair of transactions Ti and Tj like that Tj reads a data item before written by Ti, the commit operation of Ti exhibits before the read operation of Tj.
Determine the steps of path in association network You can analyse use of paths in association network in the following steps: Examine every operation and see what asso
Consider a systems development project with the following data Activity Duration (weeks) Precedence Relationship 1. Software design
What is Outer join? They can be employed while we want to keep all the tuples in R, or all those in S or all those in both relations in the result of the JOIN in spite of of w
ERD Diagram of Medical Recruitment Agency?
Critically explained the benefits and limitations of different database technologies with proper examples
Explain Foreign Key? Foreign Key - Let there are two relations (tables) R and S. Any candidate key of the relation R that is referred within the relation S is known as the fo
When a function module is activated syntax checking is performed automatically. YEs, a function module is activated syntax checking.
The Internal or Physical Level The collection of files permanently stored on secondary storage devices is called as the physical database. The internal or physical level is t
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
Why is need for the multiple access paths?
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