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DATABASE
CREATIONCONCEPTS
RAYMOND S. BERMUDEZ
Instructor, College of Computer Studies - MSEUF
LESSON 4
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7/25/2019 5_Database Creation Concepts
2/12
BY: Mr. RAYM!" S. BERMU"E#, - Instructor, College of Computer
Studies, MSEUF $ %ucen& Cit'
rg&ni(ing "&t&
Your )rst step in org&ni(ing d&t& is toidentif' t*e
indi+idu&l felds*e speci)c +&lue, or content, of &
)eld
is c&lled t*e feld valueA set of )eld +&lues is
c&lled & record
!et, 'ou group rel&ted )elds toget*erinto tables
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BY: Mr. RAYM!" S. BERMU"E#, - Instructor, College of Computer
Studies, MSEUF $ %ucen& Cit'
Rel&tions*ips
A collection of rel&ted t&les isc&lled &
relato!al database
You connect t*e records in t*e
sep&r&te t&les t*roug* & co""o!feld
A #r"ar$ %e$ is & )eld, or &collection of )elds, /*ose
+&lues
uni0uel' identif' e&c* record in &t&le
1*en 'ou include t*e prim&r' 2e'
from one t&le &s & )eld in & secondt&le to
form & rel&tions*i et/een
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4/12
BY: Mr. RAYM!" S. BERMU"E#, - Instructor, College of Computer
Studies, MSEUF $ %ucen& Cit'
Rel&tions*ips
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5/12
BY: Mr. RAYM!" S. BERMU"E#, - Instructor, College of Computer
Studies, MSEUF $ %ucen& Cit'
Rel&tion&l "&t&&seM&n&gement
S'stemsA database "a!a'e"e!t s$ste"
(DBMS) is & soft/&re progr&m t*&t lets'ou
cre&te d&t&&ses &nd t*enm&nipul&te
d&t& in t*em
In & relato!al database"a!a'e"e!t s$ste", d&t&
isorg&ni(ed &s & collection of t&les
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BY: Mr. RAYM!" S. BERMU"E#, - Instructor, College of Computer
Studies, MSEUF $ %ucen& Cit'
3uidelines for "esigning"&t&&sesIdentif' &ll t*e
)elds needed to produce
t*e re0uired inform&tionrg&ni(e e&c* piece of
d&t& into its
sm&llest useful p&rt3roup rel&ted )elds into
t&les"etermine e&c* t&le4s prim&r' 2e'Include &
common )eld in rel&ted
t&lesA+oid d&t& redund&nc'"etermine t*e
properties of e&c* )eld
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7/25/2019 5_Database Creation Concepts
7/12BY: Mr. RAYM!" S. BERMU"E#, - Instructor, College of
Computer Studies, MSEUF $ %ucen& Cit'
Tra!sact*S+, 5S6% in MS S6% Ser+er7889 is +er' ;eile /*en it
comes ton&mes. In f&ct, it is +er' less restricti+et*&n
most ot*er computer l&ngu&ges.Still, t*ere &re rules
'ou must follo//*en n&ming & d&t&&se:
A n&me c&n st&rt /it* eit*er & letter 5&,,
c, d, e, f, g, *, i,
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7/25/2019 5_Database Creation Concepts
8/12BY: Mr. RAYM!" S. BERMU"E#, - Instructor, College of
Computer Studies, MSEUF $ %ucen& Cit'
After t*e )rst c*&r&cter 5letter, digit,underscore, or
s'mol, t*e n&me c&n*&+e comin&tions of
underscores,letters, digits, or s'mols. E&mples &re-!23or
act-42-t
A n&me c&n include sp&ces. E&mple
&re c5u!tres st6ts, 'ov"!t(records), or 'l5b7 8urve$99
"&t&&se
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7/25/2019 5_Database Creation Concepts
9/12BY: Mr. RAYM!" S. BERMU"E#, - Instructor, College of
Computer Studies, MSEUF $ %ucen& Cit'
RECMME!"E"
Unless st&ted ot*er/ise 5/e /illmention t*e eceptions, for
e&mple
/it* +&ri&les, t&les, etc, & n&me
/illst&rt /it* eit*er & letter 5&, , c, d, e, f,g, *,
i,
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7/25/2019 5_Database Creation Concepts
10/12BY: Mr. RAYM!" S. BERMU"E#, - Instructor, College of
Computer Studies, MSEUF $ %ucen& Cit'
A n&me /ill not st&rt /it* t/ounderscores
If t*e n&me is & comin&tion of /ords,
&t le&st t*e second /ord /ill st&rt inupperc&se.
E&mples &re Cou!tresStatstcs, :lobal Surve$,-RealS#ort,
;ullNa"e, orDrvers,ce!seNu"ber
After cre&ting &n o
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7/25/2019 5_Database Creation Concepts
11/12BY: Mr. RAYM!" S. BERMU"E#, - Instructor, College of
Computer Studies, MSEUF $ %ucen& Cit'
CREATE DATABASEDatabaseName
*e CREATE DATABASEepression isre0uired. *e
DatabaseNamef&ctor is t*en&me t*&t t*e ne/
d&t&&se /ill *&+e.
Alt*oug* S6% is not c&se-sensiti+e, 'ou
s*ould m&2e it & *&it to e &/&re of
t*ec&ses 'ou use to n&me 'our o
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DATABASE
CREATIONCONCEPTS
RAYMOND S. BERMUDEZ
Instructor, College of Computer Studies - MSEUF
LESSON 4
