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The data of a view is not physically stored, but derived from one or more tables.
True the data of a view is not physically stored
Chapter 10a review questions
compare the features of oracle RDBMS with MySQL and Microsoft SQL server
Process to find the non-concurrent objects Once we find out non-concurrent (mutually exclusive) objects, we can fold all objects together in one thread of process or control. O
In which relational modes, cardinality is termed? Answer : Cardinality is termed in a number of tuples relational modes.
The aims of the project are: 1. To enable the students to undertake the detailed design of a specific plant or process 2. The design projects includes: process selection; und
What is called block-level striping? Block level striping stripes blocks across many disks. It treats the array of disks as a large disk, and provides blocks logical numbers
Saving Derived Attributes to Avoid Re-computation As discussed, "redundancy means duplication of exact data". But, if multiple copies of same data are present in the system,
Which sorting technique is used to sort databases, whose sizes are very big? Give one such algorithm. Why do sorting techniques like quicksort, insertion sort, etc. not applied
Update Anomaly : This anomaly is occurred due to data redundancy. Redundant information makes updates more complex since, for example, varying the name of the instructor of MCS-014
What are the three classes of SQL expression? SQL expression consists of three clauses: Select From Where
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