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What was the method in which records are physically stored in a specified order according to a key field in each record ?
A method in which records are physically stored within a specified order according to a key field in every record is hash. (In hash method, a hash function is performed on the key value to determine the unique physical address of the record to store or retrieve)
What is difference between TRUNCATE and DELETE? - Truncate can't be rolled back whereas Delete can be. - Truncate keeps the lock on table whereas Delete keeps the lock on ea
What is data integrity? Ans: It is the data consisted of in database that is accurate and consistent. (Data integrity means that the data should be valid as per to the give
What is Information System?
What was the method in which records are physically stored in a specified order according to a key field in each record ? A method in which records are physically stored within
Hierarchical model is also known by? A hierarchical model is also known as a Tree structure.
What are called multilevel indices? Indices with two or more levels are known as multilevel indices.
Why do you go for sorting your query results? SQL SELECT command to fetch data from MySQL table. Whenever you select rows, the MySQL server is free to return them in any order
Single-Valued Dependencies A database is a collection of related information and it is therefore inevitable that some items of information in the database would depend on some
why are older data models are being replaced by new data models
What is known as clustering file organization? In the clustering file organization, records of several dissimilar relations are stored in the similar file.
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