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Explain briefly concurrent task by taking an example.
Concurrent Task- The concurrent occurrence of more than one event is called concurrent task. Operating systems can handle concurrent tasks capably. The Air Traffic Control system (ATC) for examples, can manage simultaneous tasks in fractions of a second.
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
What is a PROJECT operation? The project operation is a unary operation that returns its argument relation with particular attributes left out. Projection is shown by pie (π).
Problem: (a) Briefly explain the ‘Hierarchical Database Model' using appropriate diagram. (b) List and briefly describe five potential benefits of the database approach comp
Advantages of Database management system Let us summarize the advantages. Reduction of Redundancy: This is perhaps the most important advantage of using DBMS. Redundancy i
What is a recovery scheme? An integral part of a database system is a recovery scheme that can restore the database to the reliable state that existed before the failure.
How many types of users works on database? Users are differentiated through the way they expect to interact along with the system (i) Application programmers-interact with
Load sample data into the database tables design and test queries to return the following information • All rows and columns for employees • All rows and columns for customers •
Describe Hashing in DBMS? Hashing: Hashing is a technique to store data within an array so which storing, searching, inserting and deleting data is fast (in theory it's O(1))
(a) Data warehouse can be defined as "a subject-oriented, integrated, time-variant, non-volatile collection of data" in support of management's decision making process. Explain ea
What is the use of sub queries? A sub query is a select-from-where expression that is nested with in another query. A common use of sub queries is to do tests for set membershi
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