Data Dictionary Views In Oracle 11g Pdf Download

 
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MessagePosté le: Sam 3 Sep - 10:49 (2016)    Sujet du message: Data Dictionary Views In Oracle 11g Pdf Download Répondre en citant




Data Dictionary Views In Oracle 11g Pdf Download > urlin.us/3z4nl











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How...to...Use...the...Data...Dictionary...The...views...of...the...data...dictionary...serve...as...a...reference...for...all...database...users....This....chapter....contains....the....following....sections:....Overview....of....the....Data....Dictionary....Overview....of....the....Dynamic....Performance....Views....Database....Object....Metadata....Overview....of....the....Data....Dictionary....An....important....part....of....an....Oracle....database....is....its....data....dictionary,....which....is....a....read-only....set....of....tables....that....provides....administrative....metadata....about....the....database.....This...section...includes...the...following...topics:...How...Oracle...Database...Uses...the...Data...Dictionary...How...to...Use...the...Data...Dictionary...How...Oracle...Database...Uses...the...Data...Dictionary...Data...in...the...base...tables...of...the...data...dictionary...is...necessary...for...Oracle...Database...to...function....During....database....operation,....Oracle....Database....reads....the....data....dictionary....to....ascertain....that....schema....objects....exist....and....that....users....have....proper....access....to....them.....See....Also:....Oracle....Database....Reference....for....a....complete....list....of....the....dynamic....performance....views'....synonyms....and....their....columns.........The....chapter....also....describes....the....dynamic....performance....views,....which....are....special....views....that....are....continuously....updated....while....a....database....is....open....and....in....use.....

No..Oracle..Database..user..should..ever..alter..(UPDATE,..DELETE,..or..INSERT)..any..rows..or..schema..objects..contained..in..the..SYS..schema,..because..such..activity..can..compromise..data..integrity...Introduction..to..the..Data..Dictionary..One..of..the..most..important..parts..of..an..Oracle..database..is..its..data..dictionary,..which..is..a..read-only..set..of..tables..that..provides..information..about..the..database...This..chapter..contains..the..following..topics:...The..COMMENTS..columns..describing..the..tables..and..their..columns..are..not..cached..unless..they..are..accessed..frequently...Synonyms...are...not...created...for...these...views,...because...DBA...views...should...be...queried...only...by...administrators....Users....should....avoid....naming....their....own....schema....objects....with....the....same....names....as....those....used....for....public....synonyms.....See....Also:...."Tools....for....Database....Installation....and....Configuration"....to....learn....about....DBCA....Oracle....Database....Administrator's....Guide....to....learn....how....to....run....catalog.sql....manually....Oracle....Real....Application....Clusters....Administration....and....Deployment....Guide....to....learn....about....using....performance....views....in....Oracle....RAC....Storage....of....the....Dynamic....Performance....Views....Dynamic....performance....views....are....based....on....virtual....tables....built....from....database....memory....structures.....During....database....operation,....Oracle....Database....reads....the....data....dictionary....to....ascertain....that....schema....objects....exist....and....that....users....have....proper....access....to....them.....Some....views....are....accessible....to....all....database....users,....whereas....others....are....intended....for....administrators....only.....When..you..use..the..Database..Configuration..Assistant..(DBCA)..to..create..a..database,..Oracle..automatically..creates..the..data..dictionary...

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MessagePosté le: Sam 3 Sep - 10:49 (2016)    Sujet du message: Publicité

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