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What is called as recursive partitioning?
The system repeats the splitting of the input unless each partition of the build input fits in the memory. Such partitioning is known as recursive partitioning.
Describe Specialsation and generalization? Specialisation /generalization: This is a top down and bottom up approach to the design of database. It displays the IS_A relation
Describe Parameteric end users? Parametric end users might be given update access, but are commonly not permitted to change the structure of data.
Association as a cache This association must be updated when any new element is added to it, but testing for overlap using association is more efficient. Figure:
Nested Queries Let us see some more complex queries in this section. Sub-queries: Some of the basic concerns of sub-queries are: A sub-query is a SELECT statemen
diagrams and meaning
Why are cursors necessary in embedded SQL? A cursor is an object used to store the output of a query for row-by-row processing through the application programs. SQL statements
Run the following queries. For each query show 1) What you expect the output to be based upon the data 2) the SQL code and 3) the output running the query in Oracle. 1. Show all c
Determine the OBJECTIVES of object design After passing through this unit, you should be able to: describe and apply concept of generalisation; understand and appl
Insulation between conceptual and physical structures It can be defined as: 1. The Database Administrator should be capable to vary the storage structures without affectin
Question 1 Discuss about second normal form and third normal form Question 2 Write short note on 1) Data Manipulation Language 2) Data Definition La
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