Managing User Content.ppt

8/20/2019 Managing User Content.ppt

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IBM PureData System

for Analytics(Formerly known as, IBM Netezza)

-Ravi

[email protected]

http://www.etraining.guru/http://www.etraining.guru/


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CREATE DATABASE


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Default Database: SYSTEM

Default Database Template: MASTERDB

In !ete""a #orl$% DATABASE&CATA'(

Startin* in +,-,.% !ete""a supports t/e ability to $efine multiple sc/emas #it/in eac/ $atabase

In pre0ious releases 1i,e,% before +,-,.)% t/e !ete""a system supporte$ one $efault sc/ema per $atabase,

T/e $efault an$ only sc/ema matc/e$ t/e name of t/e $atabase user #/o create$ t/e $atabase

Enale Multi!le s"#ema su!!ort$

0i 2n"2$ata2post*res3l,conf

4ariable: enablesc/ema$boc/ec5

-: Sin*le sc/ema

6: Enables multiple sc/ema support in limite$ mo$e,

You #ill *et a #arnin*% if a 3uery references an in0ali$ sc/ema

7: Enables support for multiple sc/emas, 8sers can create% alter% set% an$ $rop sc/emas,

If a 3uery references an in0ali$ sc/ema% t/e 3uery returns an error


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%ynta&$CREATE DATABASE name

9 IT; < 9 DE=A8'T C;ARACTER SET c/arset <

9 DE=A8'T C;ARACTER SET c/arset C(''ATI(! collation <

9 C(''ECT ;IST(RY 9 (! > (== < <

9 REP'ICATI(! SET name <

Create a $atabase% optionally a$$in* it to t/e specifie$ replication set,

E&am!le$SYSTEM1ADMI!)&? create $atabase trainin*$b@

CREATE DATABASE

%'%EM()*MIN+ l 'ist of $atabases DATABASE > (!ER

MASTERDB > ADMI!

SYSTEM > ADMI!

TRAI!I!DB > ADMI!

1. ro#s)


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%'%EM()*MIN+&? c trainin*$bYou are no# connecte$ to $atabase trainin*$b

R)ININ/*B()*MIN+ select obi$% $atabase from 0$atabase@ (BID > DATABASE

7 > MASTERDB 6 > SYSTEM

7F+7G7 > TRAI!I!DB

1. ro#s)

R)ININ/*B()*MIN+ 30nz@netezza 12341456 n"stats type $atabase

DB I$ DB !ame Create Date (#ner I$ !um Tables !um 4ie#s !um Acti0e 8sers

6 SYSTEM 7-6766-+ -F:.G:-. F-- - - +

7 MASTERDB 7-6766-+ -F:.G:-. F-- - - -

7F+7G7 TRAI!I!DB 7-6H-676 -6:HG:F+ F-- 6 - -

)ny i7ea, w#ere t#is newly "reate7 7ataase store78 (In %9: 7isks (or+ Netezza #ost 7isks8+

2n"2$ata2base2$atabase obect i$?


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/en #e create a $atabase% t/e system automatically creates . sc/emas:

I!=(RMATI(!SC;EMA

DE=I!ITI(!SC;EMA

(#ner Sc/ema?

I!=(RMATI(!SC;EMA J DE=I!ITI(!SC;EMA are use$ by t/e system to /ol$ information

about system obects an$ 0ie#s% but t/ey are not accessible by users,

T/e o#ner sc/ema is t/e $efault sc/ema

A $atabase name can be a maKimum of 67L bytes

Any user #/o is t/e o#ner of a $atabase automatically /as full pri0ile*es to all t/e obects in t/e$atabase,

Similarly% for systems t/at support multiple sc/emas in a $atabase% t/e sc/ema o#nerautomatically /as full pri0ile*es to all t/e obects in t/e sc/ema,

SET CATA'( $atabase name?

SET SC;EMA sc/ema name?


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You can mana*e !ete""a $atabases usin*:

16) !SN'

17) !ete""a Performance Portal1.) !"A$min tool

1H) eb A$min Interface

1F) Data Connecti0ity applications li5e (DBC% DBC% an$ ('EDB, EK: A*inity or5benc/


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CREATE TAB'E


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%ynta&$

CREATE 9 TEMP(RARY > TEMP < TAB'E tablename

1 columnname type 9 9 constraintname < columnconstraint 9 constraintc/aracteristics < < 9% ,,, <

9 9 constraintname < tableconstraint 9 constraintc/aracteristics < < 9% ,,, <

) 9 DISTRIB8TE (! 1 column 9% ,,,< ) < 9 (RA!IE (! O 1 column 9% ,,,< ) > !(!E < 9 R( SEC8RITY <

Q

E&am!le$

TRAI!I!DB1ADMI!)&? $t!o relations foun$,

TRAI!I!DB1ADMI!)&? create table t6 1c6 int% c7 int) $istribute on ran$om@

CREATE TAB'E

TRAI!I!DB1ADMI!)&? $t

'ist of relations

!ame > Type > (#ner

T6 > TAB'E > ADMI!

16 ro#)

/en you create a table% it $oesnt consume any space on $ataslices

Space in $ataslices #ill be allocate$ only #/en you insert ro#s,


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E&tent size$ . MB

Eac/ eKtent is $i0i$e$ into 7H67LB pa*es 1also calle$ bloc5)

)"tion Item$ 'o*in to !ADMI! an$ #atc/ space *ettin* allocate$ t/e moment you insert ro#s in a table


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C/ec5point TimeU

Test our learnin*s:

16) Create a ne# $atabase

17) =in$ out its obect ID1.) Create a table 18sin* /as/2ran$om $istribution), C/ec5 if any space allocation t/rou*/ !ADMI

1H) Insert a ne# ro#, !o# c/ec5 space allocation t/rou*/ !ADMI!

1F) Insert anot/er ro#, !o# c/ec5 space allocation t/rou*/ !ADMI!


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!ETEA DATATYPES


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;#at is a *ataty!e8

A $atatype represents a set of 0alues

Eac/ column can /a0e only one $atatype, You cant miK $atatypes #it/ a column


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1. )!!ro&imate numeri" 7ata ty!es$

Dont use =loatin* point $ata types for $istribution columns% oin columns% or for columns t/at re3uiremat/ematical operations suc/ as S8M an$ A4

!ete""a cant run a fast /as/ oin on a floatin* point $ata type% but instea$ must run a slo#er sort an$

mer*e oin


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4. =#ara"ter %tring 7ata ty!es$

To $etermine t/e optimal c/aracter $ata type% use t/e belo# 3uery:

SE'ECT MAV 1 'E!T;1TRIM1columnname)))% A4 1'E!T; 1TRIM 1columnname))) =R(M tablename@

If MAV1'E!T;) ? C;AR && ? C;AR instea$ of 4ARC;AR

If A4 len*t/ 7 C;AR && ? use 4ARC;AR instea$ of C;AR


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>. Boolean 7ata ty!es$

You can use follo#in* #or$s to specify booleans:WTrue or falseW(n or off WX- or X6

Wtrue or XfalseWXt or XfWXon or XoffWXyes or Xno

!e0er use a Boolean $ata type for $istribution columns


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2. em!oral 7ata ty!es$


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?. Binary 7ata ty!es$

!ete""a supports t#o types of binary $ata types:


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!ete""a Internal Data Types

!ete""a reser0es belo# column names as internal $ata types:


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Ro# Si"e

=or e0ery ro# of e0ery table% t/ere is a 7Hbyte fiKe$ o0er/ea$ of t/e ro#i$% createKi$% an$ $eleteKi$,

If you /a0e any nullable columns% a null 0ector is re3uire$ an$ it is !2L bytes #/ere ! is t/e number

of columns in t/e recor$, T/e system roun$s up t/e si"e of t/is /ea$er to a multiple of H bytes,

In a$$ition% t/e system a$$s a recor$ /ea$er of H bytes if any of t/e follo#in* is true:WColumn of type 4ARC;ARWColumn of type C;AR #/ere t/e len*t/ is *reater t/an 6G 1store$ internally as 4ARC;AR)WColumn of type !C;ARWColumn of type !4ARC;AR

T/e only time a recor$ $oes not contain a /ea$er is if all t/e columns are $efine$ as !(T !8''%

t/ere are no c/aracter $ata types lar*er t/an 6G bytes% an$ no 0ariable c/aracter $ata types


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Data types $escription


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SY!(!YMS


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An alternati0e #ay of referencin* tables% 0ie#s% or functions

Allo#s us to create easily type$ names for lon* obect names

You can use follo#in* synonym comman$s:

Create Synonym

Drop Synonym

Alter Synonym

rant Synonym

Re0o5e Synonym

%ynta&$ %'%EM()*MIN+ / create synonymComman$: CREATE SY!(!YM

Description: Creates a ne# synonym

SyntaK:

CREATE SY!(!YM name =(R refname

E&am!le$ %'%EM()*MIN+ create synonym ss5e#stu$ent for s5e#,,stu$ent@CREATE SY!(!YM


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o 7is!lay synonyms$ %'%EM()*MIN+ $y 'ist of relations

!ame > Type > (#ner

SSEST8DE!T > SY!(!YM > ADMI!

16 ro#)

%'%EM()*MIN+ alter synonym ss5e#stu$ent rename to sstu$ents5e#@ A'TER SY!(!YM

%'%EM()*MIN+ alter synonym sstu$ents5e# o#ner to RA@

A'TER SY!(!YM%'%EM()*MIN+ $y 'ist of relations

!ame > Type > (#ner

SST8DE!TSE > SY!(!YM > RA

16 ro#)

%'%EM()*MIN+ $rop synonym sstu$ents5e#SYSTEM1ADMI!)? @

DR(P SY!(!YM

%'%EM()*MIN+ $y!o relations foun$,

%'%EM()*MIN+


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4IES


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A 0ie# is simply t/e representation of a SN' statement t/at is store$ in memory so t/at it can be easily reuse

=or eKample: If #e fre3uently issue t/e follo#in* 3uery:

SE'ECT stu$ent,si$% stu$ent,sname% mar5s,per from stu$ent% mar5s #/ere stu$ent,si$ & mar5s,si$@

e can create /ere a 0ie# as belo#:

CREATE 4IE 0stu$entmar5s AS SE'ECT stu$ent,si$% stu$ent,sname% mar5s,per from stu$ent% mar5s

;ERE stu$ent,si$ & mar5s,si$@

=rom neKt time on#ar$s% #e can simply select from 0ie# as belo#:

SE'ECT =R(M 0stu$entmar5s@

%ynta&$SYSTEM1ADMI!)&? / create 0ie#

Comman$: CREATE 4IE

Description: Constructs a 0irtual table

SyntaK:CREATE 4IE 0ie# AS SE'ECT 3uery

Creates a ne# 0ie#,

CREATE (R REP'ACE 4IE 0ie# AS SE'ECT 3uery

Creates a ne# 0ie# or replaces an eKistin* 0ie#,


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Materiali"e$ 4ie#s


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Sorte$% Proecte$% an$ Materiali"e$ 1SPM) 0ie#s

Proects subset of tables columns% $oes sort% an$ stores on $is5

%ynta&$SYSTEM1ADMI!)&? / create materiali"e$ 0ie#

Comman$: CREATE MATERIA'IED 4IE

Description: Creates a ne# materiali"e$ 0ie#

SyntaK:

CREATE MATERIA'IED 4IE 0ie# AS SE'ECT column 9% ,,,< =R(M table 9 (RDER BY column 9% ,,,< <

Creates a ne# materiali"e$ 0ie#,

CREATE (R REP'ACE MATERIA'IED 4IE 0ie# AS SE'ECT column 9% ,,,<

=R(M table 9 (RDER BY column 9% ,,,< <

Creates a ne# materiali"e$ 0ie# or replaces an eKistin* materiali"e$ 0ie#,

SPM 0ie#s are use$ to impro0e 3uery performance si*nificantly

If selecte$ column eKists in materiali"e$ 0ie#% optimi"er selects t/e $ata from materiali"e$ 0ie#

instea$ of *oin* t/rou*/ base table


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=e# Restrictions:

(nly one base table in t/e =R(M clause

!o ;ERE clause !o eKpressions are allo#e$ in materiali"e$ 0ie# columns

(nly user table as base table for SPM 0ie#, Dont specifiy CBT% system table% etc as base table

/en you insert a ne# recor$ in base table% same #ill be inserte$ into materiali"e$ 0ie# table as #ell,

So% as time *oes on% #e #ill be /a0in* unsorte$ recor$s *ettin* appen$e$ to materiali"e$ 0ie# table at t/e en$

So% #e s/oul$ perio$ically manually refres/ SPM 0ie# by suspen$in* an$ refres/in* it,

A'TER 4IE MST8DE!TSE MATERIA'IE RE=ERES;@

SE1ADMI!)&? create materiali"e$ 0ie# mstu$ents5e# as select SID% S!AME from stu$ent or$er by si$@

CREATE MATERIA'IED 4IE

SE1ADMI!)&? $m

'ist of relations

!ame > Type > (#ner > STATE

MST8DE!TSE > MATERIA'IED 4IE > ADMI! > ACTI4E

16 ro#)

Settin* Referes/ T/res/ol$: SET SYSTEM DE=A8'T MATERIA'IE T;RES;('D T( number?


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/en you use A'TER 4IES (! MATERIA'IE RE=RES;: T/e system refres/es all suspen$e$ 0ie#s% an$

all nonsuspen$e$ 0ie#s #/ose unsorte$ $ata /as eKcee$e$ t/e refres/ t/res/ol$,

Settin* Refres/ T/res/ol$: SET SYSTEM DE=A8'T MATERIA'IE T;RES;('D T( number?

T/e T;RES;('D specifies t/e Z of unsorte$ $ata in t/e materiali"e$ 0ie#, Default: 7-

You can set t/res/ol$ from 6 to [[,

/ A'TER 4IE


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!"bac5up comman$ ust bac5s up SPM 0ie# $efinition% not t/e SPM 0ie#specific $ata

!"restore automatically creates2populates materiali"e$ 0ie#s from base tables unless t/e SPM 0ie# is in

suspen$ state,

one maps for (RDER BY columns in materiali"e$ 0ie#s are create$,

Best Practices:

8se most fre3uently use$ an$ most fre3uently restricte$ columns

E0en t/ou*/ you can /a0e more t/an one materiali"e$ 0ie# on a table% restrict t/is number

'imit columns in materiali"e$ 0ie#s to as less as possible


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System 4ie#s


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T/ere are ! number of catalo* 0ie#s in !ete""a, 'ets loo5 at fe# of t/em /ere:

vview$ To 5no# #/at are a0ailable 0ie#s in t/e !ete""a

v7ataase$ All $atabases information

vuser$ About users information in t/e !ete""a system

vtale$ 'ist of tables, Bot/ system tables J Mana*ement Tables

RA4I1ADMI!)&? select obi$% tablename from 0table #/ere tablename&\C8ST(MER\@ (BID > TAB'E!AME

7.G.FH > C8ST(MER

16 ro#)

vrelation"olumn$ Table2column mappin*RA4I1ADMI!)&? select (BID% !AME% ATT!AME from 0relationcolumn #/ere obi$&7.G.FH@

(BID > !AME > ATT!AME

7.G.FH > C8ST(MER > C.

7.G.FH > C8ST(MER > C7

7.G.FH > C8ST(MER > C6

1. ro#s)


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voAe"ts$ 'ists $ifferent obects li5e tables% 0ie#s% functions% etc

vrystat$ currently runnin* 3ueries statistics

vry#ist$ ;istory of #/at /as been run

vaggregate$ Returns a list of all $efine$ a**re*ates

v7ataty!e$ all system $atatypes

vfun"tion$ All $efine$ functions

vgrou!$ 'ist of all *roups

vsysteminfo$ System information suc/ as systemstatus% 0ersion info% etc

vin7e&: 'ist of all user in$eKes vo!erator$ 'ist of all $efine$ operators

vrelation"olumn7ef$ Returns a list of all attributes of a relation t/at /as $efine$ $efaults


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vseuen"e$ Returns a list of all $efine$ se3uences

vtalein7e&$ Returns a list of all user table in$eKes

vuser$ Returns a list of all users 1$u)

vusergrou!s$ Returns a list of all *roups of #/ic/ t/e user is a member

vgrou!users$ list of all users of a *roup

vsysgrou!!riv$ Returns a list of all $efine$ *roup pri0ile*es, 1$p* *roupname)

vsysin7e&$ Returns a list of all system in$eKes 1$Si)

vsys!riv: Returns a list of all user pri0ile*es, 1$p user?)

vsystale: Returns a list of all system tables, 1$St)

vsysuser!riv: list permissions *rante$ to a user, 1$pu user?)

vsysview: Returns a list of all system 0ie#s, 1$S0)


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8SERS R(8PS PRI4I'EES


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!ete""a Database 8sers

To access t/e !ete""a $atabase% users must /a0e !ete""a $atabase user accounts

Remember% no nee$ for any (S le0el useri$sU

/en a user accesses !ete""a $atabases% !ete""a $etermines t/e access pri0ile*es to $atabase obectsan$ t/e a$ministrati0e permissions to 0arious tas5s an$ capabilities

Create 8ser EKample:


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Create 8ser 1SyntaK)


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;#y "anCt I "reate an user like t#is8

Yes% users are *lobal obects an$ a *lobal obect 1$atabase) alrea$y /as t/e same name


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!ete""a Database roups

roups are $esi*ne$ to allo# a$ministrators to *roup users by $epartment or functionality

By $efault% t/ere is a pre$efine$ *roup calle$ P8B'IC, As users are create$ t/ey are automatically a$$e$

To t/e *roup P8B'IC,

8sers cannot be remo0e$ from t/e *roup public% or $rop t/e *roup public,

8sers can be members of many *roups@ /o#e0er% *roups cannot be members of ot/er *roups,

roups% users% an$ $atabases s/are a common name space so *roup% user an$ $atabase names

must be uni3ue,

=or eKample: You cannot /a0e a *roup name RA4I% a user name RA4I% an$ a $atabase name RA4I

Dow 7o you 7is!lay list of grou!s8


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roups Creation 1SyntaK)


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CREATE R(8P28SER 1EKamplesU)


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CREATE R(8P28SER 1E l U)


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D f lt U & P d


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n"1n"): 'inuK user% not eKpose$ to !PS client users

a$min1pass#or$): !PS $atabase superuser for t/e !PS /ost soft#are% #it/ full accessto all system functions an$ obects at all times

root1!ete""a): 'inuK superuser #/ic/ pro0i$es system root lo*in

Default Users & Passwords

T/e $efault $atabase *roup is calle$ !uli", All users are automatically assi*ne$ asmembers of t/e public *roup, You cannot $elete t/e public *roup% or remo0e users from

it,

P i il


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Privileges

!ete""a /as t#o types of pri0ile*es:

16) (bect Pri0ile*es

17) A$ministrati0e Pri0ile*es

(bect pri0ile*es apply to in$i0i$ual obect instances, A$ministrati0e pri0ile*es apply to t/e system as

a #/ole,

ist of Ae"t 9rivileges$

)ort$ Allo#s t/e user to abort sessions, i,e,% you can use nzsession comman$

)ll$ Allo#s t/e user to /a0e all t/e obect pri0ile*es

)lter$ Allo#s t/e user to mo$ify t/e obect attributes

*elete$ Allo#s t/e user to $elete table ro#s

*ro!$ Allo#s t/e user to $rop all obects

E&e"ute$ Allo#s t/e user to eKecute 8D=s an$ 8DAs in SN' 3ueries/en%tats$ Allo#s t/e user to *enerate statistics on tables2$atabases

/room$ Allo#s t/e user to run R((M TAB'E comman$

Insert$ Allo#s t/e user to insert ro#s into a table

Pri ileges


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ist$ Allo#s t/e user to $isplay an obect name

%ele"t$ Allo#s t/e user to select 1or 3uery) ro#s #it/in a table

run"ate$ Allo#s t/e user to $elete all ro#s from a table

:!7ate$ Allo#s t/e user to mo$ify table ro#s

ist of )7ministrator 9rivileges$

Ba"ku!$ Allo#s t/e user to perform bac5ups, T/e user can run nza"ku! comman$

0=reate5 )ggregate$ Allo#s t/e user to create user$efine$ a**re*ates 18DAs) an$ to operateon

eKistin* 8DAs,0=reate5 *ataase$ Allo#s t/e user to create a $atabases

0=reate5 E&ternal ale$ Allo#s t/e user to create eKternal tables, Permissions to operate oneKistin* tables is controlle$ by obect pri0ile*es,

0=reate5 Fun"tion$ Allo#s t/e user to create user$efine$ functions 18D=s) an$ to operate oneKistin* 8D=s,

0=reate5 /rou!$ Allo#s t/e user to create *roups, Permissions to operate on eKistin* *roups iscontrolle$ by obect pri0ile*es

Privileges

Privileges


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0=reate5 In7e&$ =or system use only, 8ser cannot create in$eKes

0=reate5 irary$ Allo#s t/e user to create user$efine$ s/are$ libraries,

0=reate5 Materialize7 Giew$ Allo#s t/e user to create Materiali"e$ 0ie#s

0=reate5 9ro"e7ure$ Allo#s t/e user to create store$ proce$ures

0=reate5 %euen"e$ Allo#s t/e user to create se3uences

0=reate5 %ynonym$ Allo#s t/e user to create synonyms

0=reate5 ale$ Allo#s t/e user to create tables

0=reate5 em! ale$ Allo#s t/e user to create temporary tables

0=reate5 :ser$ Allo#s t/e user to create users

0=reate5 Giew$ Allo#s t/e user to create 0ie#s

0Manage5 Dar7ware$ Allo#s t/e user to $o t/e follo#in* /ar$#arerelate$ operations: 4ie#/ar$#are status% mana*e SP8s% mana*e topolo*y an$ mirrorin*% an$ run $ia*nostic tests, T/e

user can run nz7s an$ nz#w comman$s

Privileges

Privileges


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0Manage5 %e"urity$ Allo#s t/e user to run comman$s an$ operations t/at relate to /istory$atabases suc/ as creatin* an$ cleanin* up /istory $atabases

0Manage5 %ystem$ Allo#s t/e user to $o mana*ement operations, =or eKample: n"system%n"state% n"stats% an$ n"session priority

restore$ Allo#s t/e user to restore t/e system, can run nzrestore comman$

:nfen"e$ Allo#s t/e user to create an unfence$ user$efine$ function 18D=) or user$efine$a**re*ate18D=)

Privileges

Grant Syntax


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Grant Syntax

Grant Example (Obj t P i il !


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Grant Example (Objet Privilege!

Grant Example ("d i P i il !


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Grant Example ("dmin Privilege!

#E$O%E Syntax


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#E$O%E Syntax


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SN' IDE!TI=IERS

Types of I$entifiers


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Types of I$entifiers

T/ere are 7 types of I$entifiers in !ete""a

W Re*ular I$entifiers

W Are caseinsensiti0e

W Are con0erte$ to $efault system case

W =or eKample: Sales an$ SA'ES are t/e e3ui0alent

W Delimite$ I$entifiers

W Are enclose$ in $ouble3uotation mar5s

W Are casesensiti0e

W Are not con0erte$ to $efault system case

W =or eKample: Sales] an$ SA'ES] are $ifferent

Types of I$entifiers 1Re*ular I$entifier EKample)


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Types of I$entifiers 1Re*ular I$entifier EKample)

Types of I$entifiers 1Delimite$ I$entifier EKample)


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Types of I$entifiers 1Delimite$ I$entifier EKample)


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SEN8E!CE


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/at is a se3uence^

A se3uence is a name$ obect in a $atabase t/at can be use$ to *enerate uni3ue numbers

A se3uence may be byteint% smallint% inte*er% bi*int

You can use se3uence 0alues #/ere0er you #oul$ use numeric 0alues

You can create% alter% an$ $rop name$ se3uences

SyntaK:

CREATE SEN8E!CE se3uencename AS $atatype

9options?


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Se3uences $o not support cross $atabase access@ you cannot obtain a se3uence 0aluefrom a se3uence $efine$ in a $ifferent $atabase,


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Nuestions^

Documents

Managing User Content.ppt