1) Explain SQL and PL/SQL in detail and also compare them.
2) Write down the disadvantage of data base system.
3) What do you understand by data independence? Explain.
4) What is relation? Explain the various properties of relation.
5) What do you understand by check constraint?
6) Data base provides many layers as types of information security? Describe in detail.
7) What are the advantages of database system? Explain.
8) What is normalization? Explain 1NF, 2NF, 3NF with examples?
9) Explain the different data types used in SQL?
10 Write detailed notes on:
a) Relational constraints
b) DBMS architecture