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Which file organization provides very fast access to any arbitrary record of a file?Hashed file organization provides very fast access to any arbitrary record of a file.
basic structure of xml
What are the advantages of creating a table from existing table?
Explain concurrency control? Concurrency control Oracles multiversion concurrency control varies from the concurrency mechanism used by some other data base vendors. Read
The Conceptual Level or Global level The conceptual level presents a logical view of the complete database as a unified whole. It permits the user to bring all the data in th
State about the Activity Diagram Activity diagrams show flow from one activity to other. It is an ongoing non atomic execution within a state machine. Activity finally results
What are object interaction diagrams? Object interaction diagrams are the diagrams that used to describe order in which messages are communicated in execution of an operation,
Using Literal Character String Example: To print IS A as one string with column name employee SELECT ENAME || ' IS A ' || JOB AS "EMPLOYEE" FROM EMP;
Types of data independence Data independence can be classified into the following two types: Physical Data Independence: This means that for any change made in the physi
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What is conceptual model ? A conceptual model is a independent of both hardware and software.
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