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What is database Trigger?
A database trigger is a PL/SQL block that can explained to automatically execute for insert, update, and delete statements against a table. The trigger can e defined to execute once for the entire statement or once for each row that is inserted, updated, or deleted. For any one table, there are twelve events for which you can explain database triggers. A database trigger can call database procedures that are also written in PL/SQL.
real life situations where database management system are most suitable
Example -Find the employee name, salary, department number and average salary of his/her department, for those employees whose salary is more than the average salary of that depart
Define the term Domain. For each n every attribute there is a set of permitted values known as the domain of that attribute.
ER diagram on cosmetics
Define a property that is not a property of transactions? Ans: Concurrency is not a property of transactions
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MySQL statements for extending the database to incorporate new facilities Deliverables for submission You must submit the following deliverables in the Assignment Dropbox in
What is inheritance? Inheritance is an object orientation concept that allows reusability of code / design. Basic sense of inheritance is that if one class is predefined than a
prototype of a distributed information system for a national car part retail outlet chain.
How many types of users works on database? Users are differentiated through the way they expect to interact along with the system (i) Application programmers-interact with
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