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What is the concept of Virtual field?
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What are ACID Properties?
aht is the difference b/w network & hierarchial & relational dbms????
What are the advantages of normalizing a database.
What is the use of default key?
Two tables emp(empid,name,deptid,sal) and dept(deptid,deptname) are there.write a query which displays empname,corresponding deptname also display those employee names who donot belong to any dept.
Which Statement would you use to remove the EMPLOYEE_Id_PK PRIMARY KEY constraint and all depending constraints from the EMPLOYEE table?
Define stored procedure?
Display the employees whose salary is less than average salary.
What is a Transformation?
What are the concurrency problems a database faces?
diff b/w inter process and in process
Design an ETL process( batch job/script)from source to starting that u will not be dependent on the source in the near future?please elobarate details on what are things to consider.if you'd like to do a diagram that will be great.please answer it
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