Modeling Data
Authored by Barbara White
Computers
University
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7 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What happens to an entity in a Entity Relationship Model when we convert it into a logical data model?
It becomes to a logical table
It becomes to a database
It becomes to a column
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
If we have a binary relationship with a cardinality that says 1 to M (M= Many) or M (M=Many) to 1. How many tables will we create when we convert it into a logical data model?
1 table
2 tables
3 tables
4 tables
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What happens to an attribute in a Entity Relationship Model when we convert it into a logical data model?
It becomes to a table
It becomes to a database
It becomes to column
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What happens to the id attribute in a Entity Relationship Model when we convert it into a logical data model?
It becomes the primary key column in the new table
It becomes the foreign key column in the new table
It becomes a simple column in the new table
5.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
What is data types?
It specifies what type of data is expected inside of each column in a table (ef. number, date, string)
It specifies how many tables you will create when you convert your Entity Relations Model to a Logical Data Model
It specifies the database-name
It counts how many attributes you have
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What does the data-type INT contain
Whole numbers
Decimal numbers
Characters
Date
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What are you supposed to do in the database implementation stage/(step)?
In this stage we will be creating our database with the database language SQL. It includes the specification of data elements, data types, indexing, primary and foreign keys, constraint etc.
In this stage we will be creating our database with the database language SAS. It includes modeling the database design.
In this stage we will be designing and creating the Front-End of the database.
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