Question 1

The database description,known as the distributed ____________________ schema,is the common database schema used by local TPs to translate user requests into subqueries (remote requests)that will be processed by different DPs.

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Question 2

Describe performance transparency and heterogeneity transparency.

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Question 3

The DO-UNDO-REDO protocol defines three types of operations.What are they?

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Question 4

A fully distributed database management system must perform all of the functions of a centralized DBMS.What are these functions?

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Question 5

Typically,the _________________________ scenario requires a network file server running conventional applications that are accessed through a network.

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Question 6

If a DDBMS exhibits ____________________ transparency,the user does not need to know that the data are partitioned-meaning the table's rows and columns are split vertically or horizontally and stored among multiple sites.

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Question 7

Explain heterogeneous distributed database systems.

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Question 8

What is transaction transparency? What are some of the basic concepts that you should know to understand how transactions are managed in a DDBMS?

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Question 9

The ____________________ fragment condition indicates that each row is unique,regardless of the fragment in which it is located.

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Question 10

The ____________________ commit protocol guarantees that if a portion of a transaction operation cannot be committed,all changes made at the other sites participating in the transaction will be undone to maintain a consistent database state.

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Quiz 12: Distributed Database Management Systems