Database Systems: Design, Implementation, & Management
11th Edition
ISBN: 9781285196145
Author: Steven, Steven Morris, Carlos Coronel, Carlos, Coronel, Carlos; Morris, Carlos Coronel and Steven Morris, Carlos Coronel; Steven Morris, Steven Morris; Carlos Coronel
Publisher: Cengage Learning
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Chapter 10, Problem 4P
Program Plan Intro
Lock:
Lock is the process that ensures the unique use of data item for particular transaction. If the data item is locked by one transaction, the other transactions cannot use the data item until the first transaction unlocks the data item.
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Explain the benefits of marking transaction boundaries, declaring lock characteristics, and letting a DBMS place locks.
Explain the difference between an exclusive lock and a shared lock.
True or False:
Mandatory security mechanisms of a DBMS can be set by the engineer implementing the database and include constraints to ensure data integrity such as:
strict data types
enforcing or requiring fields to be entered
using lists to restrict data entry.
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Chapter 10 Solutions
Database Systems: Design, Implementation, & Management
Ch. 10 - Prob. 1RQCh. 10 - Prob. 2RQCh. 10 - Prob. 3RQCh. 10 - Prob. 4RQCh. 10 - Prob. 5RQCh. 10 - Prob. 6RQCh. 10 - Prob. 7RQCh. 10 - Prob. 8RQCh. 10 - Prob. 9RQCh. 10 - Prob. 10RQ
Ch. 10 - Prob. 11RQCh. 10 - Prob. 12RQCh. 10 - Prob. 13RQCh. 10 - Prob. 14RQCh. 10 - Prob. 15RQCh. 10 - Prob. 16RQCh. 10 - Prob. 17RQCh. 10 - Prob. 1PCh. 10 - Prob. 2PCh. 10 - Prob. 3PCh. 10 - Prob. 4PCh. 10 - Prob. 5PCh. 10 - Prob. 6PCh. 10 - Prob. 7PCh. 10 - Prob. 8PCh. 10 - Prob. 9PCh. 10 - Prob. 10PCh. 10 - Prob. 11P
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- In a rollforward, the DBMS uses the log to undo any changes made to the database during a certain period. (515)arrow_forwardOne way to secure a database is to allow only administrators to have access to create and delete tables. (513)arrow_forwardUsing a specific example (different from what the textbook discusses), explain the use of binary and shared/exclusive locks in a DBMS (in your own words).arrow_forward
- What happens if you do not declare transaction isolation level and cursor type to a DBMS? Is not declaring the isolation level and cursor type good or bad?arrow_forwardDiscuss the criteria for selecting an appropriate distribution strategy in a distributed DBMS.arrow_forwardExplain the concepts of transparency in distributed DBMS. Discuss different types of transparency (e.g., distribution, replication, location, and failure transparency) and their importance.arrow_forward
- How does deadlock detection and resolution differ in a distributed DBMS compared to a centralized one?arrow_forwardFor more clarification, could you please explain: Using a DBMS with several users at once 1. DBMS backup and recovery 2.arrow_forwardWhen someone says they work with a DBMS, what exactly do they mean? Make a list of the positives and drawbacks associated with this circumstance.arrow_forward
- Please show ur explanation and ur right answerarrow_forwardExplain the concept of transparency in a Distributed DBMS. Discuss different types of transparency (e.g., location transparency, fragmentation transparency) and their significance.arrow_forwardFor what reasons are approaches to access control in databases more important than those in flat-file settings? When it comes to maintaining order inside a database, what exactly does a DBMS manage to do?arrow_forward
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