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How many levels can be viewed in Architecture of the database ? Architecture of the database can be viewed as three levels.
State The position of object at any moment is called state. An object can have many states depend upon time. After receiving some input instructions, the object can change its
Find the names of all Albums that have more than 30 tracks. Result: (name: varchar(255))
how many types of data model in DBMS? explain data abstraction with its different level
What is DML Query Langauge? Data Manipulation Language (DML) - A data manipulation language is a language in which enables users to access or manipulate data as organized throu
Explain the cartesian product in Database Management System
Improved Reliability: In a centralised DBMS, a server failure stops the operations of the DBMS. Though, a failure at single site of a DDBMS, or a failure of a communication link cr
Define check point and its impact on data base recovery. Ans: There could be hundreds of transactions handled per minute, in a large on-line database system.
Describe queries with complex types? The present extension of the SQL query language deal with the complex type Let us start with the simple example: Find the title and t
To do the division operation R1 ÷ R2, R2 should be a correct subset of R1. In the following example R1 have attributes A and B and R2 have only attribute B so R2 is a correct subse
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