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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. The area of memory in MySQL that stores the most recently entered command
Query-By-Example (QBE)
Statement History
Data Independence
Legal-Values Integrity
2. 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
Subquery
Relational Database
Database Design
Compound Criteria
3. The portion of the system catalog the contains column information
SELECT Clause
Stored Procedure
Repeating Groups
Syscolumns
4. When sorting on two fields - the less important field
Difference
Secondary Sort Key
Qualify
Foreign Key
5. The SQL command that creates an index in a table
CREATE INDEX
Major Sort Key
Security
Reserved Words
6. Combination of criteria in which both criteria must be true
View
AND Criterion
Primary Key
Form
7. The process of creating collections of records that share some common characteristics
Secondary Sort Key
FOREIGN KEY
Database Design
Grouping
8. The form of a join in which all records appear - even if they don't match
System Catalog
Outer Join
Defining Query
Legal-Values Integrity
9. The prevention of unauthorized access to a database
Security
Database Administration (DBA)
Referential Integrity
Field
10. The relational algebra command used to select columns from a table
Calculated Field
Simple Condition
PROJECT
Grouping
11. Two simple criteria in a query the are combined with the AND or OR operators
Compound Conditions
AND Criterion
Form
Database Administration (DBA)
12. 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
Relation
Relationship
Validation Rule
Major Sort Key
13. A computer that provides services to the clients in a client/server system
REVOKE
Server
GROUP BY Clause
Concatenation
14. A query that deletes all records that satisfy some criterion
Delete Query
ALTER TABLE
Union Compatible
Redundancy
15. In Access the query that updates the contents of a table
Update Query
Sysviews
Delete Query
Functions
16. A data value meaning "unknown" or "not applicable"
Integrity
Null
Repeating Groups
Compound Criteria
17. A relational data manipulation language in which new tables are created from existing tables through the use of a set of operations
Update Query
ORDER BY Clause
Query
Relational Algebra
18. A file used to store data about a single entity. Such a file can be thought of as a table.
Compound Conditions
Data File
Intersection
Division
19. 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
Relational Algebra
Primary Key
Redundancy
Database Design
20. A structure that satisfies the properties required to be a relation with the exception of allowing repeating groups
Unnormalized Relation
Cascade Delete
Join
Entity-Relationship (E-R) Diagram
21. A characteristic or property of an entity
Attribute
View
Integrity Constraint
Delete Query
22. A combination of two tables consisting of all records that are in either table
Union
Delete Query
CHECK
System Catalog
23. The field or fields on which an index is built
Query
Primary Key
Database
Index Key
24. A person or place or object or event or idea for which you want to store and process data
Reserved Words
Entity
Make-Table Query
Form
25. A punctuation mark - such as a semicolon - that separates pieces of data
Delimiter
Secondary Sort Key
GROUP BY Clause
Unnormalized Relation
26. A Characteristic or property of an entity
Column
Null
Data Macro
HAVING Clause
27. A structure that can store information about multiple types of entities - the attributes of these entities and the relationships among those entities
Concatenation
Database
Primary Key
Integrity Constraint
28. The relational algebra command that combines tables and searches for rows in the first table that match all rows in the second table
Compound Conditions
Minor Sort Key
Division
Relationship
29. The SQL command that is used to change the structure of a table
Database Design
SQL (Structured Query Language)
Reserved Words
ALTER TABLE
30. The prevention of unauthorized access to a database
Security
Query-By-Example (QBE)
SUBTRACT
Defining Query
31. 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
Relationship
DROP TABLE
Field
Aggregate Functions
32. A file used to store data about a single entity. Such a file can be thought of as a table.
Arguments
Data File
View
Minor Sort Key
33. The individual who is responsible for a database or the head of database administration
Database Administrator (DBA)
Sort
Syscolumns
Data File
34. More than one entry at a single location in a table
Division
Entity
Form
Repeating Groups
35. A structure that can store information about multiple types of entities - the attributes of these entities and the relationships among those entities
Aggregate Functions
Database
Redundancy
SELECT Clause
36. The rule that if table A contains a foreign key that matches the primary key of table B then the value of this foreign key must either match the value of the primary key for some row in table B or be null
Division
Single-Column Index
Referential Integrity
Secondary Sort Key
37. A minimal collection of columns (attributes) in a table on which all columns are functionally dependent and that is chosen as the main direct-access vehicle to individual rows.
Server
Comparison Operator
Primary Key
Delete Query
38. 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
Join
INSERT
Attribute
Entity-Relationship (E-R) Diagram
39. The portion of the system catalog that contains table information
Systables
Primary Sort Key
Multiple-Field Index
Functions
40. The prevention of unauthorized access to a database
Database
SELECT Clause
Security
Database
41. A rule that must be followed by data in a database
Integrity
Integrity
Integrity Constraint
Join
42. The column on which two tables are joined
Grouping
Database Administrator (DBA)
Join Column
Validation Rule
43. A characteristic or property of an entity
Column
Trigger
Secondary Sort Key
Field
44. An update option in which related records are automatically updated
Cascade Update
Integrity Constraint
Make-Table Query
Arguments
45. 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
Calculated Field
Criterion
Entity-Relationship (E-R) Diagram
Repeating Groups
46. Two tables are union compatible if they have the same number of fields and if their corresponding fields have identical data types
Join Column
Sort
Criterion
Union Compatible
47. The SQL command that drops (deletes) and index from a table
Entity
Concatenation
Query
DROP INDEX
48. 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
Natural Join
Primary Sort Key
Union
One-to-Many Relationship
49. A characteristic or property of an entity
Compound Conditions
System Catalog
Field
Data Independence
50. The relational algebra command for performing the difference of two tables
Sysindexes
SQL (Structured Query Language)
SUBTRACT
Validation Rule