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Anubhav Srivastava 2 years, 7 months ago

Hi
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Preeti Dabral 2 years, 8 months ago

<th>Primary Key</th> <th>Candidate Key</th> <th>Primary key is a minimal super key. So there is one and only one primary key in a relation.</th> <th>While in a relation there can be more than one candidate key.</th> <th>Any attribute of Primary key can not contain NULL value.</th> <th>While in Candidate key any attribute can contain NULL value.</th> <th>Primary key can be optional to specify any relation.</th> <th>But without candidate key there can’t be specified any relation.</th> <th>Primary key specifies the important attribute for the relation.</th> <th>Candidate specifies the key which can qualify for primary key.</th> <th>Its confirmed that a primary key is a candidate key.</th> <th>But Its not confirmed that a candidate key can be a primary key.</th>
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<pre> |-------------------------------------|---------------------------------| |**alternate key** |**foreign key** | |-------------------------------------|---------------------------------| |unique |non-unique | |-------------------------------------|---------------------------------| |never accept null value |accept null value | |-------------------------------------|---------------------------------| |can be multiple |can be multiple | |-------------------------------------|---------------------------------| |Independent another table |Dependent another table | |-------------------------------------|---------------------------------| |Create Noncluster index automatically|Cannot create index automatically| |-------------------------------------|---------------------------------|</pre>
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Preeti Dabral 2 years, 9 months ago

It may be anything from a simple shopping list to a picture gallery or the vast amounts of information in a corporate network. To add, access, and process data stored in a computer database, you need a database management system such as MySQL Server.

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Preeti Dabral 2 years, 9 months ago

A protocol is a standard set of rules that allow electronic devices to communicate with each other.

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Preeti Dabral 2 years, 8 months ago

MySQL, the most popular Open Source SQL database management system, is developed, distributed, and supported by Oracle Corporation. The MySQL website (http://www.mysql.com/) provides the latest information about MySQL software. MySQL is a database management system. A database is a structured collection of data.

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Anish Gurunga Anish 2 years, 9 months ago

Fundamental of computer

Anish Gurunga Anish 2 years, 9 months ago

Expand the following alu
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Preeti Dabral 2 years, 9 months ago

  • Atomicity. Atomicity is best explained via actual atoms. 
  • Consistency. Consistency means that a transaction must be compatible with the constraints on data integrity.
  • Durability. 
  • Conclusion.
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Madhusudan Gorai 2 years, 10 months ago

Local area network
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Preeti Dabral 2 years, 9 months ago

Multimedia is a form of communication that combines different content forms such as text, audio, images, animations or video into a single presentation, in contrast to traditional mass media, such as printed material or audio recordings.

It is not correct
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Bhavana N 2 years, 10 months ago

Open office writer
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Rupam Jana 2 years, 11 months ago

𝐻𝑒𝓁𝓁𝑜 𝒞𝒶𝓃 𝒲𝑒 𝒷𝑒𝒸𝑜𝓂𝑒 𝒻𝓇𝒾𝑒𝓃𝒹𝓈
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Reeta Markam 2 years, 11 months ago

What is record error
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Rupam Jana 2 years, 11 months ago

There are 7 topologies are there in networking

Rupam Jana 2 years, 11 months ago

Wrong ans.

C.J.Ramiya Krishna 2 years, 11 months ago

5. Star topology ring topology mesh topology tree topology bus topology

Harman Bawa 2 years, 11 months ago

4.
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Rupam Jana 3 years ago

If you need the best sample papers, so you've to search from the cbse guide app
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Rumanshu Aa 3 years ago

It ki book chapter 123and ch 1 from employability skills

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