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Q. Explain the terms key constraints participation constraints and mapping caradinalities in ER model. Participation Constraints : The participation of an entity set E i
Explain query execution plan? - Optimizer available in SQL Server optimizes code to be effectively executed. - A query execution plan demonstrates how this optimizer would r
Briefly explain each of the following database terms. Use no more than 2-3 lines for each term. 1. DBMS 2. Update Anomaly 3. Alias (referring to tables in SQL queries)
What is recovery management component? Ensuring durability is the responsibility of a software component of the base system known as the recovery management component.
to develop elrctronic database from manual forms
1. Which model is used to store data in tree structures Ans: Hierarchical model is used to store data in tree structures
#question benefits and limitations of data models..
Define query language? A query is a statement requesting the retrieval of information. The portion of DML that includes information retrieval is known as a query language.
What is called remapping of bad sectors? If the controller detects that a sector is injured when the disk is initially formatted, or when an attempt is made to write the secto
Define access time. Access time is the time from when a read or write request is issued to when data transfer starts.
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