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COB 204 Databases Test with Complete Solutions
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COB 204 Databases Test with Complete Solutions What is a database management system (DBMS)? - Answer-Software program to create, process, administer a database Licensed from vendors - IBM, Microsoft, Oracle, & others DB2, Access, SQL Server, Oracle Database Open Source MySQL: License-free f...

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  • August 3, 2024
  • 8
  • 2024/2025
  • Exam (elaborations)
  • Questions & answers

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  • cob 204 databases
  • cob 204 databases test with complete solutions

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  • COB 204 Databases

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COB 204 Databases Test with
Complete Solutions
What is a database management system (DBMS)? - Answer-Software program to
create, process, administer a database

Licensed from vendors
- IBM, Microsoft, Oracle, & others
DB2, Access, SQL Server, Oracle Database
Open Source
MySQL: License-free for most applications

what does Database administration do? - Answer-- Set up security system, user
accounts, passwords, permissions, limits for processing
- Limit user permissions
- Backup database, improve performance of database application, remove unwanted
data


This statement will return a row for every row in the Customer table, and also
associated information from the CustomerDetail table is there is any

A.) SELECT * FROM CustomerDetail RIGHT JOIN CustomerDetail ON Customer.Id =
CustomerDetail.CustomerId;
B.) SELECT * FROM Customer LEFT JOIN CustomerDetail ON Customer.Id =
CustomerDetail.CustomerId;
C.) SELECT * FROM Customer WHERE CustomerDetail.CustomerId = Customer.Id;
D.) SELECT * FROM Customer; - Answer-B.) SELECT * FROM Customer LEFT JOIN
CustomerDetail ON Customer.Id = CustomerDetail.CustomerId;

Which SQL clause will you add to this query in order to associate the "Phone" field with
the "Number1" field in the "Contacts" table?
SELECT * FROM Customers

A.) JOIN Contacts
ON Phone=Number1
B.) JOIN ON Customers.Phone = Contacts.Number1
C.) JOIN Contacts
ON Customers.Phone = Contacts.Number1
D.) CONNECT Customers.Phone = Contacts.Number1 - Answer-C.) JOIN Contacts
ON Customers.Phone = Contacts.Number1

Which type of join returns only the matches for items that are in both tables?

, A. outer join
B. right join
C. left join
D. inner join - Answer-D. inner join

Is it possible to group by two fields, and if so what would be the correct syntax?

A. Yes, using this syntax:
GROUP BY Field1
GROUP BY Field2
B. No, applying multiple grouping in the same statement is not allowed
C. Yes, using this syntax:
GROUP BY Field1, Field2
D. Yes, multiple grouping is allowed, but only if the grouped fields have the same data
type - Answer-C. Yes, using this syntax:
GROUP BY Field1, Field2


Which statement is true regarding the DB Browser tool?

A. The tool must connect to a database server
B. This tool must be purchased
C. This tool works consistently across all major platforms
D. This tool does not offer a log of historical commands - Answer-C. This tool works
consistently across all major platforms

What does a record represent in a database?

A. a kind of information
B. a set of information
C. a type of field
D. a table of values - Answer-B. a set of information

How many clauses are defined in this statement?
*SELECT Height, Weight FROM Shapes
WHERE Material='Wood'
ORDER BY Height;*

A. one
B. four
C. three
D. five - Answer-B. four

Bryan is 13 years old, Lisa is 15, and Mike is 21. Their ages would most likely be stored
in a:

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