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Test your basic knowledge |
Database Fundamentals
Start Test
Study First
Subject
:
it-skills
Instructions:
Answer 50 questions in 15 minutes.
If you are not ready to take this test, you can
study here
.
Match each statement with the correct term.
Don't refresh. All questions and answers are randomly picked and ordered every time you load a test.
This is a study tool. The 3 wrong answers for each question are randomly chosen from answers to other questions. So, you might find at times the answers obvious, but you will see it re-enforces your understanding as you take the test each time.
1. A file used to store data about a single entity. Such a file can be thought of as a table.
Foreign Key
Data File
Attribute
Query
2. The part of an SQL SELECT command that indicates the columns to be included in the query results
Attribute
SELECT Clause
Index
SELECT
3. A screen object you use to maintain or view and print data from a database
Relational Algebra
Attribute
Relational Database
Form
4. When sorting on two fields - the less important field
Entity-Relationship (E-R) Diagram
Entity
Minor Sort Key
Query
5. A characteristic or property of an entity
Integrity Constraint
Relational Database
CREATE TABLE
Field
6. In an Access query the line drawn between tables to indicate how they are related
Redundancy
Join Line
Entity-Relationship (E-R) Diagram
System Catalog
7. The query that is used to define the structure of a viewk
Unnormalized Relation
Defining Query
Validation Text
Calculated Field
8. A column (attribute) or collection of columns in a table whose value is required either to match the value of a primary key in a table or to be null
Comparison Operator
DELETE
Unnormalized Relation
Foreign Key
9. The rule that no column (attribute) that is part of the primary key may accept null values
UPDATE
One-to-Many Relationship
Relation
Entity Integrity
10. The form of a join in which all records appear - even if they don't match
Outer Join
Design Grid
Field
Database Administrator (DBA)
11. An application program's or an individual user's picture of a database
Compound Conditions
Comparison Operator
View
Reserved Words
12. A function used to calculate the number of entries and the sum or average of all the entries in a given column or the largest or smallest of the entries in a given column
Validation Text
Database
Natural Join
Aggregate Functions
13. The process of determining the content and structure of data in a database in order to support some activity on behalf of a user or group of users
Database Design
Compound Conditions
Calculated Field
Repeating Groups
14. An index built on more than one field
Join
Redundancy
Multiple Column Index
Join
15. A field whose value is computed from other fields in the database
Comparison Operator
Join
Computed Field
Entity-Relationship (E-R) Diagram
16. A query that deletes all records that satisfy some criterion
Relational Algebra
Legal-Values Integrity
Unnormalized Relation
Delete Query
17. The portion of the system catalog that contains table information
Database Administration (DBA)
Database Administration (DBA)
Join
Systables
18. Additional information required by an action in a data macro to complete the action
Query
Arguments
ORDER BY Clause
Query-By-Example (QBE)
19. The individual who is responsible for a database or the head of database administration
Database Administrator (DBA)
Cascade Delete
GROUP BY Clause
Primary Sort Key
20. The SQL command used to delete a table
DELETE
Documenter
Join Line
Entity-Relationship (E-R) Diagram
21. A function used to calculate the number of entries and the sum or average of all the entries in a given column or the largest or smallest of the entries in a given column
Aggregate Functions
Validation Rule
Make-Table Query
Database Management System (DBMS)
22. A collection of relations
Relational Database
Database
View
Simple Condition
23. The part of an SQL SELECT command that restricts the groups to be displayed
HAVING Clause
Update Query
PROJECT
Join Line
24. The SQL command that drops (deletes) and index from a table
Integrity Constraint
One-to-Many Relationship
Sort
DROP INDEX
25. A condition that involves only a single field and a single value
Outer Join
Simple Condition
Repeating Groups
Server
26. The prevention of unauthorized access to a database
Security
Subquery
SELECT
Calculated Field
27. A program or a collection of programs through which users interact with a database
Relationship
Database Management System (DBMS)
Union
One-to-Many Relationship
28. The clause in a SQL CREATE TABLE or ALTER TABLE command that specifies referential integrity
Entity
Entity-Relationship (E-R) Diagram
Unnormalized Relation
FOREIGN KEY
29. The SQL command used to describe the layout of a table. The word table is followed by the name of the table to be created and then by the names and data types of the column (fields) that comprise the table
Entity
Attribute
CREATE TABLE
Column
30. A two-dimensional table-style collection of data in which all entries are single-valued - each column has a distinct name and all the values in a column are values of the attribute that is identified by the column name - and the order of the columns
Secondary Sort Key
Primary Key
Natural Join
Relation
31. A very popular relational data definition and manipulation language that is used in many relational DBMS's
PRIMARY KEY
Database Administration (DBA)
SQL (Structured Query Language)
Column
32. A characteristic or property of an entity
Attribute
Stored Procedure
Integrity
Entity
33. A database has integrity if the data in it satisfies all established integrity constraints
Concatenation
Integrity
Validation Rule
Integrity Constraint
34. A collection of relations
Relational Database
System Catalog
REVOKE
Query-By-Example (QBE)
35. Duplication of data or the storing of the same data in more than one place.
SQL (Structured Query Language)
Database Management System (DBMS)
Relational Database
Redundancy
36. A graphic model for database design in which entities are represented as rectangles and relationships are represented as either arrows or diamonds connected to the entities they relate
Data Independence
Subquery
DELETE
Entity-Relationship (E-R) Diagram
37. A structure that can store information about multiple types of entities - the attributes of these entities and the relationships among those entities
Data Independence
Entity
Data Macro
Database
38. More than one entry at a single location in a table
Repeating Groups
Delete Query
DELETE
Integrity
39. The area of memory in MySQL that stores the most recently entered command
Redundancy
Statement History
Relationship
Natural Join
40. The plural of Criterion
UPDATE
Criteria
SUBTRACT
Major Sort Key
41. A combination of criteria in which at least on the criteria must be true
Intersection
Integrity
Repeating Groups
OR Criterion
42. An association between entities
Relationship
Attribute
Column
Sort Key
43. A relationship between two entities in which each occurrence of the first entity is related to many occurrences of the second entity and each occurrence of the second entity is related to or at most one occurrence of the first entity
Data Independence
One-to-Many Relationship
Attribute
Design Grid
44. The SQL statement that is used to revoke privileges from users of a database
REVOKE
Entity-Relationship (E-R) Diagram
Arguments
DROP INDEX
45. The relational algebra command for performing the difference of two tables
WHERE Clause
Entity
SUBTRACT
Join Column
46. A database has integrity if the data in it satisfies all established integrity constraints
Integrity
ORDER BY Clause
Validation Rule
Database Administrator (DBA)
47. Two simple criteria in a query the are combined with the AND or OR operators
Computed Field
Compound Conditions
Functions
Primary Key
48. The most common form of a join
Entity Integrity
Natural Join
Repeating Groups
Data Independence
49. When sorting on two fields this is the more important field
Major Sort Key
Entity
Primary Key
Database Administration (DBA)
50. In relational algebra the operation in which two tables are connected on the basis of common data.
Primary Key
Relational Algebra
Join
System Catalog