shivaji nadekar (864)

8/17/2019 Shivaji Nadekar (864)

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Shivaji NadekarFY.BSC.(CS)

R-N:-864


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ENTITY

PPRESENTEDBY

:- ShivajiNadekar


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Inr!d"#i!n :-

In software engineering, an eni$%re&ai!n'hi !de& (ER !de&) is adata model for describing the data orinformation aspects of a business domain orits process requirements, in an abstract waythat lends itself to ultimately beingimplemented in a database such as arelational database. The main components ofER models are entities (things) and therelationships that can eist among them.

https://en.wikipedia.org/wiki/Software_engineeringhttps://en.wikipedia.org/wiki/Data_modelinghttps://en.wikipedia.org/wiki/Databasehttps://en.wikipedia.org/wiki/Relational_databasehttps://en.wikipedia.org/wiki/Entitieshttps://en.wikipedia.org/wiki/Entitieshttps://en.wikipedia.org/wiki/Relational_databasehttps://en.wikipedia.org/wiki/Databasehttps://en.wikipedia.org/wiki/Data_modelinghttps://en.wikipedia.org/wiki/Software_engineering


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Eni$ :-

!e"nition#$

%n eni$ is something that eists in itself,actually or potentially, concretely or

abstractly, physically or not. It need not be ofmaterial eistence. In particular, abstractions and legal "ctionsare usually regarded asentities. In general, there is also no

presumption that an entity is animate.

https://en.wikipedia.org/wiki/Existencehttps://en.wikipedia.org/wiki/Abstractionhttps://en.wikipedia.org/wiki/Legal_fictionhttps://en.wikipedia.org/wiki/Legal_fictionhttps://en.wikipedia.org/wiki/Lifehttps://en.wikipedia.org/wiki/Lifehttps://en.wikipedia.org/wiki/Legal_fictionhttps://en.wikipedia.org/wiki/Legal_fictionhttps://en.wikipedia.org/wiki/Abstractionhttps://en.wikipedia.org/wiki/Existence


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Eample of student&T'!ET#$


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I*P+RT,NT +F ENTITY :-

haracter entity references in *T+

Introduction to character entity references.

haracter entity references for I&- /0$1 characters.

haracter entity references for symbols, mathematicalsymbols, and 2ree3 letters.

haracter entity references for mar3up$signi"cant andinternationali4ation characters.


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Inr!d"#i!n ! #hara#er eni$reeren#e'#$

symbols, mathematical symbols, and 2ree3letters.

These characters may be represented by glyphs inthe %dobe font 5&ymbol5.

mar3up$signi"cant and internationali4ation

characters.(e.g., for bidirectional tet).


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haracter entity references for I&- /0$1

characters#$

The character entity references in this section producecharacters whose numeric equi6alents should already be

supported by conforming *T+ 7.8 user agents.

haracter entity references for symbols,mathematical symbols, and 2ree3 letters#$

The character entity references in this section producecharacters that may be represented by glyphs in the widelya6ailable %dobe &ymbol font, including 2ree3 characters,6arious brac3eting symbols, and a selection of mathematical

operators such as gradient, product, and summation symbols.


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haracter entity references for mar3up$signi"cant and internationali4ationcharacters#$

The character entity references in this section arefor escaping mar3up$signi"cant characters (these

are the same as those in *T+ 7.8 and 9.7).


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T,N/ Y+0

TE END.

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