Differentiate nested loop, hash join and merge join.
Why is databases important in healthcare?
What is an entity-relationship model?
What is the most used database?
What is stored procedure in database?
What are the factors causing the reparsing of SQL statements in SGA?
What are the main components of a database?
How many number of columns can a RECORD GROUP have ?
1)what is the difference between view and materilized view? 2)what is the difference between delete and truncate? 3)what is the difference between migration and upgration? 4)what is the difference between RMAN HOT BACKUP and normal hot backup?
What are the features of rdbms?
Describe concurrency control.
What is index hunting?
Where is database used?