Group A 1. What is the advantage of Database Management System over File Management System? The advantage of Data Management System over File Management System are: i. Data independence ii. Data integrity and security iii. Efficient data access 2. What is data independence? Data independence is an ability to modify a schema definition […]
Continue Reading13. a. select pname from parts as p, suppliers as s, catalog as c where p.pid = c.pid and c.sid = s.sid GROUP by s.sid having count(p.pid) = 1; b. select sname from suppliers as s, catalog as c, parts as p where c.sid = s.sid and p.color = ‘red’; c. update catalog set cost […]
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