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When are they useful? Justify with an example.
The temporary tables are commonly used to support specialized rollups or exact application processing needs. Unlike a permanent table, a space is not allocated to a temporary table while it is established. Space will be dynamically allocated for the table as rows are inserted. The
CREATE GLOBAL TEMPORARY
TABLE command is used to create a temporary table in Oracle.
CREATE GLOBAL TEMPORARY TABLE (
) ON COMMIT {PRESERVE|DELETE} ROWS;
Illustration of implementation of inheritance Let us take the illustration of implementation of inheritance. Suppose that we are about to implement the Stack class and by now w
Fundamentals of Database Management 1. Explain the concept of Foreign Key. How a foreign key differs from a Primary Key? Can the Foreign Key accept nulls? 2. With a necess
Differentiate between B-tree and B + tree Ans: A B-tree (or Balanced Tree) is a search tree along with additional constraints that makes sure that the tree is all the time
Explain the Exec statement in SQL Ans: Exec statement has the structure EXEC SQL END-EXEC Embeded SQl statements are of a form identical to non embedded SQL statem
Assigning Responsibility for Operation Many operations might have obvious target objects, but some of these operations could be used at numerous places in an algorithm, by one
Differentiate between logical database design and physical database design. Show how this separation leads to data independence? Basis Logical Databas
Consider employee table of (i) and list names of department(s) for which average salary for department is more than 10,000. (SELECT d_name FROM dept WHERE d_code IN (SELECT d_c
Describe the types of Inheritance 1. Single inheritance 2. Multiple inheritance 3. Hierarchical inheritance 4. Multilevel inheritance
What are the authentication modes in SQL Server? How can it be changed? Windows mode and Mixed Mode - SQL and Windows. To alter authentication mode in SQL Server click Start, P
Process of normalization is the integral part of designing a database. Justify this statement with suitable database design
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