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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;
Differentiate between a subquery and a join If we need to acquire information from one or more tables after that either subquery or join can be used. If the columns which are t
word limit no mentioned
Describe the iterative and incremental life cycle For an iterative and incremental life cycle, two criteria are process and time. The main components of showing a project devel
construct a B+ tree for the following set of key value (2,3,5,7,11,19,23,29,31) in ascending order where the pointers that will fit in one node is as follows:A. four B. six C. eigh
Explain the Static or conservative Two Phase Locking: Static (or conservative) Two Phase Locking: In this type of scheme, all the data items are locked earlier than any opera
What exactly is the concept of Functional Dependencies? And how do we associate this concept with the logic of Super-keys, Candidate Keys, etc? Given Relation R(A,B,C,D,E) with de
Entity types that do not have any key attribute, and therefore cannot be identified independently, are known as weak entity types. A weak entity can be recognized uniquely only by
Determine the advantage of object-orientation Finally, object-orientation has advantage of continuity throughout analysis, persistent representation and design implementation.
Describe the various types of Online Analytical Processing (OLAP) tools and briefly discuss how the support common analytical operations.
Describe Participation Constraints? Participation Constraints - The participation constraint exacts whether the existence of an entity depends on its being related to another
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