WGU D427 - Database Management
Applications. Exam Questions And
Answers |Latest 2025 | Guaranteed Pass
Schema - {✔✔ANSWER✔✔}-The definition of how
data in a database will be organized.
- Create
- Read
- Update
- Delete - {✔✔ANSWER✔✔}-The basis of
interacting with databases can be defined using the
CRUD acronym. What does CRUD stand for?
,DATE: YYYY-MM-DD
DATETIME: YYYY-MM-DD HH:MM:SS -
{✔✔ANSWER✔✔}-What is the DATE datatype
syntax?
What is the DATETIME datatype syntax?
It will have 3 numbers before the decimal and 2 after. -
{✔✔ANSWER✔✔}-What does DECIMAL(3,2)
indicate?
Stored Procedures - {✔✔ANSWER✔✔}-a series of
commands stored on the database. This allows the reuse
of long or detailed queries instead of writing them for
each use. It also provides a safe way to deal with
sensitive data, especially with those unfamiliar with SQL
syntax.
Data definition language (DDL) - {✔✔ANSWER✔✔}-
involves instructing the DBMS software on what tables
, will be in the database, what attributes will be in the
tables, which attributes will be indexed, and so forth.
SELECT AVG/SUM/MIN/MAX/COUNT(Column_Name)
FROM SALES
WHERE Name = 'Matt'; - {✔✔ANSWER✔✔}-
Command to use AVG/SUM/MIN/MAX/COUNT aggregate
functions?
o One is that the tables to be joined must be listed in the
FROM clause.
o Two is that the join attributes in the tables being joined
must be declared and matched to each other in the
WHERE clause. - {✔✔ANSWER✔✔}-There are two
specifications to make in the SELECT statement to make a
join work.
SELECT SPNAME
FROM SALESPERSON, CUSTOMER
WHERE SALESPERSON.SPNUM=CUSTOMER.SPNUM -
{✔✔ANSWER✔✔}-Example of JOIN CAUSE.
Applications. Exam Questions And
Answers |Latest 2025 | Guaranteed Pass
Schema - {✔✔ANSWER✔✔}-The definition of how
data in a database will be organized.
- Create
- Read
- Update
- Delete - {✔✔ANSWER✔✔}-The basis of
interacting with databases can be defined using the
CRUD acronym. What does CRUD stand for?
,DATE: YYYY-MM-DD
DATETIME: YYYY-MM-DD HH:MM:SS -
{✔✔ANSWER✔✔}-What is the DATE datatype
syntax?
What is the DATETIME datatype syntax?
It will have 3 numbers before the decimal and 2 after. -
{✔✔ANSWER✔✔}-What does DECIMAL(3,2)
indicate?
Stored Procedures - {✔✔ANSWER✔✔}-a series of
commands stored on the database. This allows the reuse
of long or detailed queries instead of writing them for
each use. It also provides a safe way to deal with
sensitive data, especially with those unfamiliar with SQL
syntax.
Data definition language (DDL) - {✔✔ANSWER✔✔}-
involves instructing the DBMS software on what tables
, will be in the database, what attributes will be in the
tables, which attributes will be indexed, and so forth.
SELECT AVG/SUM/MIN/MAX/COUNT(Column_Name)
FROM SALES
WHERE Name = 'Matt'; - {✔✔ANSWER✔✔}-
Command to use AVG/SUM/MIN/MAX/COUNT aggregate
functions?
o One is that the tables to be joined must be listed in the
FROM clause.
o Two is that the join attributes in the tables being joined
must be declared and matched to each other in the
WHERE clause. - {✔✔ANSWER✔✔}-There are two
specifications to make in the SELECT statement to make a
join work.
SELECT SPNAME
FROM SALESPERSON, CUSTOMER
WHERE SALESPERSON.SPNUM=CUSTOMER.SPNUM -
{✔✔ANSWER✔✔}-Example of JOIN CAUSE.
