WGU D427 Database Management Applications Exam Questions With 100% Correct Answers | Verified | Latest Update 2025.

WGU D427 - Database
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Management
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100%
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- Create
- Read
- Update
- Delete $xf- $xfANSWER-The $xfbasis $xfof $xfinteracting $xfwith $xfdatabases $xfcan $xfbe $xfdefined
$xfusing $xfthe $xfCRUD $xfacronym. $xfWhat $xfdoes $xfCRUD $xfstand $xffor?




DATE: $xfYYYY-MM-DD

DATETIME: $xfYYYY-MM-DD $xfHH:MM:SS $xf- $xfANSWER-What $xfis $xfthe $xfDATE $xfdatatype
$xfsyntax?




What $xfis $xfthe $xfDATETIME $xfdatatype $xfsyntax?

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$xfDECIMAL(3,2) $xfindicate?




Stored $xfProcedures $xf- $xfANSWER-a $xfseries $xfof $xfcommands $xfstored $xfon $xfthe $xfdatabase.
$xfThis $xfallows $xfthe $xfreuse $xfof $xflong $xfor $xfdetailed $xfqueries $xfinstead $xfof $xfwriting $xfthem $xffor

$xfeach $xfuse. $xfIt $xfalso $xfprovides $xfa $xfsafe $xfway $xfto $xfdeal $xfwith $xfsensitive $xfdata, $xfespecially

$xfwith $xfthose $xfunfamiliar $xfwith $xfSQL $xfsyntax.




Data $xfdefinition $xflanguage $xf(DDL) $xf- $xfANSWER-involves $xfinstructing $xfthe $xfDBMS
$xfsoftware $xfon $xfwhat $xftables $xfwill $xfbe $xfin $xfthe $xfdatabase, $xfwhat $xfattributes $xfwill $xfbe $xfin

$xfthe $xftables, $xfwhich $xfattributes $xfwill $xfbe $xfindexed, $xfand $xfso $xfforth.




data $xfmanipulation $xflanguages $xf(DMLs) $xf- $xfANSWER-refers $xfto $xfthe $xffour $xfbasic
$xfoperations $xfthat $xfcan $xfand $xfmust $xfbe $xfperformed $xfon $xfdata $xfstored $xfin $xfany $xfDBMS

$xf(or $xfin $xfany $xfother $xfdata $xfstorage $xfarrangement, $xffor $xfthat $xfmatter): $xfdata $xfretrieval,

$xfdata $xfupdate, $xfinsertion $xfof $xfnew $xfrecords, $xfand $xfdeletion $xfof $xfexisting $xfrecords.




SELECT $xf*
FROM $xfCUSTOMER
WHERE $xfCUSTNUMB $xfBETWEEN $xf1 $xfAND $xf2; $xf- $xfANSWER-What $xfwould $xfthe $xfSELECT
statement $xflook $xflike $xfif $xfyou $xfuse $xfa $xfBETWEEN.

, WHERE $xfHQCITY $xfIN $xf('Atlanta', $xf'Chicago', $xf'Washington'); $xf- $xfANSWER-What $xfwould $xfthe
$xfSELECT $xfstatement $xflook $xflike $xfif $xfyou $xfuse $xfa $xfIN.




SELECT $xf*
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WHERE $xfHQCITY $xfLIKE $xf'W%'; $xf- $xfANSWER-What $xfwould $xfthe $xfSELECT $xfstatement
$xflook $xflike $xfif $xfyou $xfuse $xfa $xfLIKE.




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$xfpercent $xfsign $xfrepresents $xfzero $xfor $xfmore $xfarbitrary $xfregular $xfcharacters




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$xfunderscore $xfrepresents $xfa $xfsingle $xfarbitrary $xfregular $xfcharacter. $xf- $xfANSWER-What

$xfare $xfthe $xftwo $xfways $xfof $xfusing $xfthe $xfLIKE $xfcommand?




The $xfclause $xfcan $xfinclude $xfthe $xfterm $xfASC $xfat $xfthe $xfend $xfto $xfmake $xfascending
$xfexplicit $xfor $xfit $xfcan $xfinclude $xfDESC $xffor $xfdescending $xforder. $xf- $xfANSWER-The

$xfdefault $xforder $xffor $xfORDER $xfBY $xfis $xfascending. $xfHow $xfcan $xfyou $xfmake $xfit

$xfdescending $xforder?




SELECT
$xfAVG/SUM/MIN/MAX/COUNT(Column_Name) $xfFROM

$xfSALES

WHERE $xfName $xf= $xf'Matt'; $xf- $xfANSWER-Command $xfto $xfuse $xfAVG/SUM/MIN/MAX/COUNT
$xfaggregate $xffunctions?




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o Two $xfis $xfthat $xfthe $xfjoin $xfattributes $xfin $xfthe $xftables $xfbeing $xfjoined $xfmust $xfbe $xfdeclared
$xfand $xfmatched $xfto $xfeach $xfother $xfin $xfthe $xfWHERE $xfclause. $xf- $xfANSWER-There $xfare $xftwo

$xfspecifications $xfto $xfmake $xfin $xfthe $xfSELECT $xfstatement $xfto $xfmake $xfa $xfjoin $xfwork.




SELECT $xfSPNAME
FROM $xfSALESPERSON, $xfCUSTOMER
WHERE $xfSALESPERSON.SPNUM=CUSTOMER.SPNUM $xf- $xfANSWER-Example $xfof $xfJOIN
$xfCAUSE.




Dr. $xfCODD $xf- $xfANSWER-In $xf1970, $xfDr. of $xfIBM $xfpublished $xfin $xfCommunications
$xfof $xfthe $xfACM $xfa $xfpaper $xfentitled $xf"A $xfRelational $xfModel $xfof $xfData $xffor $xfLarge $xfShared

$xfData $xfBanks." $xfThis $xfpaper $xfmarked $xfthe $xfbeginning $xfof $xfthe $xffield $xfof $xfrelational

$xfdatabases.




CREATE $xfTABLE

DROP $xfTABLE $xf- $xfANSWER-Commands $xfto $xfcreate $xfand $xfdrop $xfa $xftable?

- When $xfyou $xfcreate $xfthe $xfcolumn $xfdefinition $xf(known $xfas $xfa $xfcolumn $xfconstraint).
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$xfANSWER- $xfThe $xfCREATE $xfTABLE $xfcommand $xflets $xfyou $xfdefine $xfconstraints $xfin $xftwo
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