What are the various normalizations in database?

987

What is a data source (ds)?

925

Do we consider null values the same as that of blank space or zero?

964

Is this statement true or false? All databases must be in third normal form?

986

What are the limitations of rdbms?

952

Explain about cursors?

1073

What is unique key in dbms?

904

What are the different types of keys in the database?

944

What are the advantages and disadvantages of views in the database?

1058

What is a driver in programming?

1022

What is dbms pdf?

1067

What is instance in dbms?

859

What is an optimization and performance tuning and how does it really work in practical projects?

886

What is system catalog or catalog relation?

1075

There are 100 datafiles, numbered from 1 to 100. File number 10 is deleted and it has 500 MB of data. The database is working in archive log mode. How can be the database recovered ? While doing recovery the archive logs applied are from nos 1 to 100, but 50 gets corrupted. What do we do? Can we proceed further? If so how?

2115