5.11. Knowledge Check
Knowledge Check 1
Text Description
This activity contains a set of dialog cards, which are described below.
Activity Description or Instruction:
- Dialog Text: Database; Image Alt Text: database
- Dialog Text: File; Image Alt Text: file
- Dialog Text: Fields; Image Alt Text: field
- Dialog Text: Record; Image Alt Text: record
Solution:
- A set of interrelated files forms a database (e.g., a customer sales database may include customer file, inventory file, and sales file).
- A set of related records, such as all customer records, forms a file (e.g., customer file).
- Fields contain data about one customer such as the customers address, customer name, and so on.
- All the fields for one customer form a record (e.g., customer record).
Knowledge Check 2
Text Description
- Customer ID could be categorized as a:
- file
- field
- record
- database
- Which of the following would be identified as a file?
- Data about one customer
- A customer’s name
- Data about one inventory item
- All inventory records
- Which of the following is not an advantage of database systems?
- Data sharing
- Data privacy
- Data independence
- Data integration
- In a Sales Table, the field most likely chosen as a primary key would be:
- customer number
- customer name
- inventory item number
- sales invoice number
- In an inventory table, the most likely nonkey would be
- item number
- colour and price
Solution:
- b. field
- d. All inventory records
- b. Data privacy
- d. sales invoice number
- b. colour and price
Knowledge Check 3
Is the primary Key in the Products Table.
Is the foreign Key in the Products Table.
Is the primary Key in the Category Table.
Possible Answers,
- Category ID
- Product ID
Solutions:
Is the primary Key in the Products Table – ProductID
Is the foreign Key in the Products Table – CategoryID
Is the primary Key in the Category Table – CategoryID