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Data Control The data control mostly refers to commands that permit system and data privileges to be passed to several users. These commands are usually available to database administrator. Let us see some data control language commands:
What is the used of specifying alias? Specifying alias: is used to rename column or attribute in a table.
What is RDBMS terminology for a row? A tuple is a RDBMS terminology for a row
The database will enable college administrators the ability to track students initial major. This will help college officials decide how best to prepare students for their goals an
Question: a) There are three concurrency problems, i.e. three types of potential mistake which could occur if concurrency control is not properly enforced in the database syst
it can be possible to create any table without primary key
Create centralized relational database using Top down method- Construction of Logical Model: Translation EERD into Relational Schema: Use the 8 steps algorithm of converting EERD
What is storage manager? A storage manager is a program module that gives the interface among the low level data keeps in a database and the application programs and queries su
Benefits and Limitations od Data Models?
What is the use of unique function? UNIQUE function: If UNIQUE is specified then only unique values are used to computed the mean.
Record based Logical Models: Use records as the key data representation components Examples: Relational Model: It shows data as well as relationship between data in the form
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