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File and system structure, Database Management System
Posted Date: 3/29/2013 11:59:16 AM | Location : USA
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Define instance and schema, Define instance and schema? Instance: C...
Define instance and schema? Instance: Collection of data kept in the data base at a particular moment is known as an Instance of the database. Schema: The o
Types of indexes, Types Of Indexes One of the words used during the fil...
Types Of Indexes One of the words used during the file organisation is the term index. In this part, let us describe this term in more detail. We find the index of keywords
Describe substring comparison in sql, Describe substring comparison in SQL....
Describe substring comparison in SQL. For the relation Person (name, address), write a SQL query that retrieves the names of people whose name starts along with ‘A' and address co
Write a short note on built in function in qbe, Write a short note on built...
Write a short note on built in function in QBE? Built in function in QBE: QBE involves various built in functions like AVG, MAX,MIN,SUM and CNT. We must prefix these operator
Data Warehousing Job Scheduling, 1) Define a job scheduling strategy that w...
1) Define a job scheduling strategy that will meet business requirement of reporting availability by 6am CST for the following cubes? Show the job scheduling dependencies in a pict
Er database theoretical and modeling database system, Need an expert in ER ...
Need an expert in ER database theoretical and modeling database system Project Description: Need an expert in ER database theoretical and modeling database systems? Skills
Nested queries, Nested Queries Let us see some more complex queries in ...
Nested Queries Let us see some more complex queries in this section. Sub-queries: Some of the basic concerns of sub-queries are: A sub-query is a SELECT statemen
Explain concurrency control, Explain concurrency control? Concurrency ...
Explain concurrency control? Concurrency control Oracles multiversion concurrency control varies from the concurrency mechanism used by some other data base vendors. Read
Example of alter table command, Example - ALTER TABLE emp MODIFY (empno NUM...
Example - ALTER TABLE emp MODIFY (empno NUMBER (7));
Indexed (indexed sequential) file organisation, Indexed (Indexed Sequential...
Indexed (Indexed Sequential) File Organisation It organises the file like a big dictionary, i.e., records are kept in order of the key but an index is stored which also allows
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