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What do you understand by a view? What does WITH CHECK OPTION clause for a view do?
- A view is a virtual table which comprises fields from one or more real tables.
- It is generally used to join multiple tables and get the data.
- WITH CHECK OPTION for a view prevents any modification to the data that doesn't confirm to WHERE clause of the view definition.
- This allows data belonging to the view to be updated through view.
List the requirements needed to design a trigger. The requirements are:- Specifying when a trigger is to be implemented. State the actions to be taken when the trigger im
Compare the two log-based recovery schemes in terms of ease of implementation and overhead cost. Ans: There are two types of log based recovery techniques: deferred update
What is advantage of two-way association? Two-way association advantages are following: a) Independent of the classes. b) Useful for existing predefined classes that are
Differentiate between join and outer join? Outer joins return all rows from at least one of the tables or views mentioned within the FROM clause, as long as those rows get toge
as a customer service employee explain five measures you would recommend to make even a displeased students patronize the school canteen
What are the failures of Controlling Events Between Objects Failure Unintentional termination of system. Several possible causes: failure of system hardware, o
Give some encryption techniques? A) DES B) AES C) Public key encryption
State the Design of Associations Before designing associations, it is essential to know the way they are used. For this, analysis of association traversals is required. It is
We have a new website where I need someone to 1: Inhabit the back end with all the recruitment agencies in the UK. I require someone who is not manually going to do this, but who w
Mention the various user privileges All privileges directly granted to the user or role. All privileges granted to roles that have been granted to the user or role.
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