Do all the parts .Explain each and every step .

5) A Discuss the following with example (where necessary) (5) (1) E-R Data model (1) File system management (iii) Entity (iv) Domain constraint () View 2. Discuss the advantages of using DBMS and explain Dia Independence (5) Discuss the following clause of SQL with example (5) Drop table (ii) Unique (il) Candidato key (iv) Delene (w) Alter What do you mean by Key Constraints? Discuss the Primary key and Foreign Key (5) constraints by taking any two relations with adequate attributes Use the relations: Sallorasid sname, rating age) Boatbid brame, color) and Reserved bid day) and write the following, as directed (5) (1) Find the names of Sailors who have reserved any boat and are older than 40 years [relational algebra (1) Find the names and age of Sailors who have reserved a boat 1_105 [relational algebra) (IT) Find the sild of sailors who have reserved Red boat [relational algebra) (iv) Find the distinct sailors name with rating above 8 [ using SQ4 (W) Create a view "Reserved Blue boat" Boa_Boal_name Reserve_date) for blue colour boats only [using S41 Discuss the derived operators of Relational Algebra and show that Division is a derived operator