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Determine the Disadvantages of file based systems
Some of the disadvantages of file based systems are like this:
What are the reasons for having variable length records? What are the various ways to store variable length records? Variable-length records arise in a database in various wa
We face problem of stock Opening balance and closing balance in Minus
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
Define average seek time. The average seek time is the average of the seek times, calculated over a sequence of random requests.
List out various user authorization to modify the database schema. a) Index authorization b) Resource authorization c) Alteration authorization d) Drop authorizat
Mention the type of constraints we can specify in the CREATE command of DDL. The type of constraints that can be specified are as follows:- PRIMARY KEY, NOT NULL, UNIQUE, FOR
Define the concept of aggregation. Give two examples where this concept is useful. Ans: Aggregation transforms a relationship among the objects into a higher-level object. A
Research Value: 7% Due Date: 17-Sep-2018 Return Date: 11-Oct-2018 Length: 700 words Submission method options: Alternative submission method Task back to top You are required to
What is a data dictionary? Data Dictionary is a main source of data in a data management system. Its major function is to carry the creation and management of data definition
Give an example of operations from the State Actions and Activities. For instance, in bank the activity verify account code and verify password
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