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What are the four main characteristics of the database approach? The four major characteristics of the database approach are: 1. Self-describing nature of a database system. 2.
Explain the conventions (relationships) for displaying an ER schema as an ER diagram.
Find the names of all Albums that have more than 30 tracks. Result: (name: varchar(255))
what is meant semantic query optimization? how does it differ from other query optimization techniques?
Determine the rule that a value of a foreign key should appear as a value of some particular table is called a Ans: Referential constraint. The rule that a value of a fo
Differentiate OO development from structured development. Structured approach of problem solving is based upon the idea of decomposition of system into subsystem. In this appro
What is Data Storage? The storage structures and access methods used by database system are specified by a set of explanation in a special type of DDL called data storage-defin
a method named WonGame that checks each letter in the word is matched by its label
What is known as a search key? An attribute or set of attributes used to look up records in a file is known as a search key.
System error :These contain errors in database system or the OS, example, deadlocks.Such errors are fairly hard to detect and need reprogramming the erroneous components of the sys
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