Download Databases

Information Technology
Question
Topic 3
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Name:
Date:
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Topic:
DATABASES
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Select the alternative that correctly answers the following questions.
1
DBMS stands for:
(a)
(b)
(c)
(d)
2
Which of the following could be considered a disadvantage of using a DBMS?
(a)
(b)
(c)
(d)
3
Records
Tuples
Fields
Entities
What does the following entity-relationship diagram indicate?
(a)
(b)
(c)
(d)
5
Privacy and security
Centralized data
Redundancies reduced
Less inconsistencies
Categories of information in a table are referred to as:
(a)
(b)
(c)
(d)
4
Database Memory System
Database Monitor Software
Database Management Software
Database Management System
A movie has many actors.
An actor can be in many movies.
A movie has many actors and an actor can be in many movies.
A movie must have actors.
The process of extracting information from the database using a set of criteria is
called:
(a)
(b)
(c)
(d)
Querying
Attributes
Indexing
Updating
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Information Technology
6
Text
Number
Boolean
Currency
The process of combining information from a database into a word processed
document is called:
(a)
(b)
(c)
(d)
10
Report
Query
Macro
Form
A table in a database is to have the fields firstname, surname, age, sex, phone
number and birth date. The data type for the sex field, where either m or f is entered,
would be:
(a)
(b)
(c)
(d)
9
Match Firstname = JO
Match any Firstname that starts with JO
Match any Firstname of three letters that start with JO
None of the above
In some databases the term that is used for the object that views, enters or changes
data in a table is:
(a)
(b)
(c)
(d)
8
Topic 3
Some queries use a wildcard character, such as:
Firstname = JO*
The result of this would be:
(a)
(b)
(c)
(d)
7
Question
Querying
‘What if’ scenario
Query by example
Mail merge
When entering data into a database, a validation rule can be used for:
(a)
(b)
(c)
(d)
The label that is used on a form.
Limiting values that can be entered.
A pattern for all data to be entered.
A value that is automatically entered.
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Information Technology
Question
Topic 3
True / False
1
A PRIMARY key is a field that identifies records in a different table.
2
A one to many relationship means that one record in either table can relate to many
records in the other table.
3
A database query is based on the following:
Price > 250 AND size = m
This will match any price greater than 250 or size = m
4
Combining word-processed text with data in a database is called mail merging.
5
A data dictionary is a description of each field in a database.
6
A report footer appears at the bottom of every page of the report.
7
Sorting a database can only be done using a single field.
8
The logical NOT operator is used to find records that don’t match a value in a query.
9
Data redundancy refers to data that has been replaced by more current data.
10
An entity relationship diagram is used to design a database according to relational
database principles.
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Information Technology
Question
Topic 3
Match the Word to the Statement
A - flat-file
E - referential integrity
B - database
F - SQL
C - relational
G - tuple
D - entity
H - form
1
____
A view used in databases to examine one record at a time.
2
____
A programming language used to extract data from a database.
3
____
Another name for a row of a table.
4
____
A collection of information related to a particular subject or purpose.
5
____
These types of databases store data in multiple tables and the data is linked
between tables.
6
____
This ensures that the data remains reliable and accurate.
7
____
An object about which we store data, such as, a person, place, object or event.
8
____
These types of databases store data in a single table and this table has no
relationship to any other file or table.
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