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Explain the functions of data manager?
Functions of Data Manager :- Convert operations in user's queries coming directly through query processor or indirectly in an application program from users logical view to a physical file system.- It interfaces along with file system enforces constraints to maintain consistency. And integrity of the data as well as its security. (Authorization and Integrity Manager).- Synchronizing simultaneous operations performed through concurrent users. (Transaction Manager) - Back up and recovery operations (Transaction Manager)
In problems 1 - 4, you are given the columns of a table, and a set of functional dependencies. Determine the normal form of this table. Remember that the normal form is the HIGHE
explain the mapping constraints
Define Deadlock detection If a system does not employ a few protocols that make sure deadlock freedom, after that a detection and recovery scheme should be used. An algorithm
Attributes having a one value for a particular entity. For instance, Age is a single valued attribute of a student entity. Attributes that have more than single values
#question.explain diversity and magnitude of organic compounds and general properties?
You want to implement following relationships when designing tables. How would you do it? a.) One-to-one b.) One-to-many c.) Many-to-many a.) One-to-One relationship -
Explain the Difference between DROP and DELETE DELETE deletes one or more than one tuples of a particular relation from the database. DROP is employed to remove a table from th
What is inheritance? Inheritance is an object orientation concept that allows reusability of code / design. Basic sense of inheritance is that if one class is predefined than a
what is er digram given that example of hospital,bank and library er digram.
What are the DBMS languages? Explain. Ans: a) Data Definition Languages (DDL): It is employed to specify database schema for example CREATE DROP statements etc. b) Dat
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