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What is the need of a log in a DBMS? Briefly describe the various types of records that are normally present in a log. Ans: The system log, which is generally writt
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What is Trigger? A trigger is a SQL procedure that initiates an action when an event (INSERT, DELETE or UPDATE) occurs. Triggers are kept in and managed by the DBMS. Triggers a
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
Describe the two types of methods for retrieving rows in Python? Fetchone()- Returns the next row as a sequence Fetch all()- Returns the entire result set like a strin
Give the levels of data abstraction? There are three levels of Data Abstraction a) Physical level b) logical level c) view level
WHAT IS DBMS
List the table modification commands in SQL? A) Deletion B) Updates C) Insertion D) Update of a view
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Explain the paths in the association network We can analyze use of paths in the association network as given below: Calculate each operation Find associations whic
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