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Define raid? Briefly explain it?
A range of disk organization methods, collectively called redundant arrays of independent disks (RAID)
o Improvement of reliability through redundancy.
o Improvement in performance thorugh parallelism
1. Bit level striping
2. Block level striping
RAID levels
Ask questiwhat is row indicator in database on #Minimum 100 words accepted#
what is RDBMS? how it works? good example.
What is the used of specifying alias? Specifying alias: is used to rename column or attribute in a table.
Guidelines for creation of table: Table name should begin with an alphabet. In table name, single quotes and blank spaces are not allowed. Reserve words of that DBM
Define garbage collection. Garbage may be formed also as a side effect of crashes. Periodically, it is essential to find all the garbage pages and to add them to the list of fr
What are the storage types? The storage types are: a) Volatile storage b) Nonvolatile storage
Given the following set of functional dependencies {cf→ bg, g → d, cdg → f, b → de, d → c} defined on R(b,c,d,e,f,g) a. Is cf→ e implied by the FDs? b. Is dg a superkey?
In an E-R diagram an entity set is represent by? In an E-R digram entity set is represted by rectangle.
prototype of a distributed information system for a national car part retail outlet chain.
Q. What is relational algebra and calculus? Explain the relational algebra operators :- Selection and predicate, set operation, joins and division. Sol. Relational Algebra
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