WGU D427 Database Management Applications Assessment Exam 2025/2026 with Verified Rationalized Answers 100% Graded A+

WGU D427 Database Management Applications Assessment
Exam 2025/2026 with Verified Rationalized Answers
100% Graded A+




1. Schema: The definition of how data in a database will be organized.
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2. - Create
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- Read
- Update
- Delete: The basis of interacting with databases can be defined using the CRUDacrony
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m. What does CRUD stand for?
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3. DATE: YYYY-MM-DD C



DATETIME: YYYY-MM- C



DD HH:MM:SS: What is the DATE datatype syntax?What is the DATETIME datatype sy
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ntax?
4. It will have 3 numbers before the decimal and 2 after.: What does DECI-
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MAL(3,2) indicate?
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5. Stored Procedures: a series of commands stored on the database. This allowsthe reu
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se of long or detailed queries instead of writing them for each use. It also provides a safe
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way to deal with sensitive data, especially with those unfamiliar withSQL syntax.
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6. Data definition language (DDL): involves instructing the DBMS software onwhat ta
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bles will be in the database, what attributes will be in the tables, which attributes will
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C be indexed, and so forth.
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7. data manipulation languages (DMLs): refers to the four basic operations that can and
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1C/C12

,must be performed on data stored in any DBMS (or in any other data storagearrangement, fo
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r that matter): data retrieval, data update, insertion of new records,and deletion of existin
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g records.
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8. SELECT * C



FROM CUSTOMER C



WHERE CUSTNUMB BETWEEN 1 AND 2;: What would the SELECT statementlook like
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C if you use a BETWEEN.
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9. SELECT * C



FROM CUSTOMER C



WHERE HQCITY IN ('Atlanta', 'Chicago', 'Washington');: What would the SE-
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LECT statement look like if you use a IN.
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10. SELECT * FROM C C C



CUSTOMER
WHERE HQCITY LIKE 'W%';: What would the SELECT statement look like if youuse a LI
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KE.
11. A% - C



The "%" means that any string of characters can follow afterwards.The percent sig
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n represents zero or more arbitrary regular characters
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2C/C12

, A_ - C



C The _ means that there will be exactly one letter following the A. The underscore re
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presents a single arbitrary regular character.: What are the twoways of using the LIKE
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command?
12. The clause can include the term ASC at the end to make ascending explicitor it ca
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n include DESC for descending order.: The default order for ORDER BYis ascending. Ho
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w can you make it descending order?
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13. SELECT AVG/SUM/MIN/MAX/COUNT(Column_Name)FRO C C



M SALES C



WHERE Name = 'Matt';: Command to use AVG/SUM/MIN/MAX/COUNT aggregatefunction
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s?
14. o One is that the tables to be joined must be listed in the FROM clause.o Two i
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s that the join attributes in the tables being joined must be declared
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and matched to each other in the WHERE clause.: There are two specificationsto make
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n the SELECT statement to make a join work.
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15. SELECT SPNAME C



FROM SALESPERSON, CUSTOMER C C



WHERE SALESPERSON.SPNUM=CUSTOMER.SPNUM: Example of JOINCAUSE.
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16. Dr. CODD: In 1970, Dr. C C C C



of IBM published in Communications of theACM a paper entitled "A Relational Model
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of Data for Large Shared Data Banks." This paper marked the beginning of the field of rela
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tional databases. C



17. CREATE TABLE C




3C/C12