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Explain about database system structure?
Storage manager
Authorization and integrity manager
Transaction manager
File manager
Buffer manager
Storage manager executes several data structure as a part of physical system execution
Data function
Data dictionary
Indices
The query processor
DDL interpreter
DML
Query evaluation engine
What are the difference between clustered and a non-clustered index? A clustered index is a special type of index that reorders the way records in the table are physically stor
Define query optimization. Query optimization refers to the process of search the lowest -cost method of evaluating a given query.
What is relationship? Give examples A relationship is an association between several entities. Example: A depositor relationship associates a customer with every account tha
Question 1 Indexes are ocasionally defines on a single field of a file called an indexing field. List and describe the different types of indexes Question 2 Consider a book i
A database has been designed for this beauty parlour in order for the staff to manage specific things such as bookings made by clients, payments, staff availability, level of exper
Draw entity relationship diagram for the following scenario. A university has many departments whereas each department belongs to that particular uni. That uni has also many bui
compare the features of oracle RDBMS with MySQL and Microsoft SQL server
Write a query that display ename annual salary and comm from emp table
What is the use of unique function? UNIQUE function: If UNIQUE is specified then only unique values are used to computed the mean.
What is relational model feature? A relational model feature is much more data independence than some other database models.
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