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User error: This contains errors in the program (e.g., Logical errors) with errors made by online users of database. These types of errors can be avoided by applying some check situations in programs or by limiting the access rights of online users' example, read only. So only updating or insertion operation needs appropriate check routines that perform appropriate checks on the data being modified or entered. In case of an error, some prompts can be passed to user to enable him/her to accurate that error.
What are temporary tables? Temporary tables exist solely for a particular session or whose data persists for the duration of the transaction.
Having Clause with sub queries: First we have to recollect the GROUP BYclause. The following query searches the minimum salary in every department. SELECT DEPTNO, MIN (SAL)
Synonyms It allows short names or alternative names for objects. Example : CREATE SYNONYM D30 FOR EMPD30; Now if we give command:
A practice called Perfect Pets provides private health care for domestic pets throughout America. This service is provided through various clinics located in the main cities of Ame
A collection of a same kind of entities is known as an Entity Set or entity type. Example: For the COLLEGE database defines earlier objects of concern are Students, Faculty,
Durability : This property necessitates that once a transaction has committed, the changes made by it be never lost because of subsequent failure. Thus, a transaction is also a bas
Attributes and its types explain?
Write an sql statement to find what is the percentage of home policies which are from the state of Arizona out of all Home policies by Policy Value.
Question: (a) What do you meant by content management and briefly describe four major components of a Content Management System? (b) Explain key benefits of a Content Manage
Explain Record Based Logical Models? Record-Based logical Models: Also define data at the conceptual and view levels. Unlike object-oriented models, are used to state overall
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