Answer the following problems.

problem 1) What do you mean by database system? Describe the components of database system.

problem 2) Give a short account on Primary Keys.

problem 3) What is E-R diagram? Describe.

problem 4) prepare down the syntax of SELECT statement with suitable exs.

problem 5) What is relational algebra? Describe with appropriate ex.

problem 6) List and describe any five built-in-functions in QBE.

problem 7) What is multivalued dependency? Describe.

problem 8) What is functional dependency? Describe.

problem 9) What is PL/SQL? describe.

problem 10) What are the three sections of PL/SQL block?

problem 11) describe the Entity – Relationship Model with exs.

problem 12) Describe the special relational operations with exs.

problem 13) What are the retrieval operations in SQL? Describe.

problem 14) describe the First, Second and Third Normal forms with suitable exs.

problem 15) describe in detail, the cursor management in PL/SQL.