Unisoft Technologies Nagpur

Understand Deferred Segment Creation Beginning with Oracle Database 11 g Release 2, when you create heap-organized tables in a locally managed tablespace, the database defers table segment creation until the first row is inserted. In addition, segment creation is deferred for any LOB columns of the table, any indexes created implicitly as part of table creation, and any indexes subsequently explicitly created on the table. Note: In Release 11.2.0.1, deferred segment creation is not supported for partitioned tables. This restriction is removed in release 11.2.0.2 and later. The advantages of this space allocation method are the following: It saves a significant amount of disk space in applications that create hundreds or thousands of tables upon installation, many of which might never be populated. It reduces application installation time. There is a small performance penalty when the first row is inserted, because the new segment must be created at that ...

Oracle SQL Practice Questions for Students All Question are Based on Scott Schema Exhibits EMP TABLE Exhibits DEPT TABLE Exhibits SALGRADE TABLE Question 1) Display all the records in emp table? 2) Display all the records in emp table where employee belongs to deptno 10? 3) Display all the records in emp table where employee does not belong to deptno 30? 4) Display total number of records in Emp table? 5) Display emp table with salary descending order? 6) Display first five records in employee table? 7) Display all the records in emp table order by ascending deptno, descending salary? 8) Display all employees those who were joined in year 1981? 9) Display COMM in emp table. Display zero in place of null. 10) Display the records in emp table where MGR in 7698,7566 and sal should be greater then 1500 11) Display all employees where employees hired before 01-JAN-1981 12) Display all employees with...