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Data Control The data control mostly refers to commands that permit system and data privileges to be passed to several users. These commands are usually available to database administrator. Let us see some data control language commands:
usecase diagram,activity diagraM,SEQUENCE DIAGRAM
What are axioms? Axioms or rules of inference give a simpler technique for reasoning about
What is relational model feature? A relational model feature is much more data independence than some other database models.
What is the full form of DDL? DDL is stand for Data Definition Language.
A distributed database is defined as "a collection of multiple logically interrelated database which are physically distributed over a computer network" (a) Give any three advan
Task Part A. Create an ERD from a business problem. (50 marks) Read the following problem and complete the tasks listed below. THE ABS Blood Bank Australian Blood Services (ABS) i
What is the use of RAID? A variety of disk-organization methods, collectively called redundant arrays of independent disks are used to better the performance and reliability.
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
Logical Operators Rules of Precedence: Order evaluated Operator 1 All comparison operators 2
Relational Model: The relational model uses a collection of tables to represent both data and the relationships among those data. Each table has multiple columns and each column h
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