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Question 1. The key school is the school:
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Single Key
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Unique Key
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First Key
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Primary Key
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Question 2. Which of the following statements is incorrect when talking about the client-server database?
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In the client-server architecture, the components (of the QSSDL) interact with each other to create the system consisting of the resource request component and the resource allocation component.
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Two components require resources and the resource component must be installed on the same computer
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The resource level component is usually installed at a server on the network (local).
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Components that require resources can be installed on many other machines (clients) on the network
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Question 3. Choose the correct option. Two tables in a relational database linked together through:
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Address of tables
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School's name
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Properties of the selected fields (not necessarily the keys)
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Key attribute
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Question 4. Which of the following statements is incorrect when talking about personal database?
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Users act as database administrators
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The safety of the personal database system is very high
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Personal database system is stored on 1 machine
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Database system only allows 1 user at a time
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Question 5. Which of the following criteria is often used to select a primary key?
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The key has the least properties
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Does not contain attributes that change over time
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Any lock
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Only the key has an attribute
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Question 6. What is a relational database?
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The database is built on the relational data model
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Database used to create, update and exploit relational databases
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The database is built based on relational data model and relational database exploitation
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Database used to create, update and exploit relational databases based on relational data model
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Question 7. Links between tables are based on:
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Key attribute
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Properties that match each other between tables
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The intention of the database system administrator
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The intention to join tables into a table has more properties
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Question 8. Which of the following statements is incorrect when talking about the advantages of a client-server database?
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Cost for communication decreased
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Adding a client is easy
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Developing and using client-server database systems is quite simple and easy
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Enhance the ability to ensure consistency of data
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Question 9. Which of the following statements about relational databases is correct?
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Set of data tables
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Database created from QTCSDL Access system
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Database that is interrelated between data
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The database is built on the relational data model
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Question 10. Which of the following statements is incorrect?
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Each table has at least one key
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Should choose the primary key is the key with the least attribute
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There can be multiple primary keys in a table
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Determining the key depends on the logical relationship of the data, not on the value of the data
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4 ★ | 2 Vote