Database System Concepts
7th Edition
ISBN: 9780078022159
Author: Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher: McGraw-Hill Education
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"Snapshot isolation" may demonstrate airline
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- Draw the relationships and entities model for each of the following: * in the traditional way* for example: see the pic??. In the database of the library, the author can author more than one book, and the book can be subscribed toWritten by more than one authorarrow_forwardConsider a database that belongs to an airline and employs snapshot isolation for its database management system. Describe an instance in which a nonserializable execution takes place, but the airline is open to the possibility that it will be prepared to tolerate it in exchange for improved overall performance.arrow_forwardIn what scenarios would a graph database be more suitable than a relational database?arrow_forward
- Let's look at an airline database to see how snapshot isolation is used in practice. The airline, for instance, could agree to a nonserializable execution if it means better long-term outcomes.arrow_forwardThink of a database for an airline as an example. A non-serializable approach could be acceptable if airlines can achieve higher overall performance.arrow_forwardConsider, for instance, the database used by a large airline that relies on snapshot isolation as the foundation for its data management. In order for an airline to be willing to accept a nonserializable execution in exchange for improved overall performance, what kinds of conditions would have to be met first?arrow_forward
- Consider the idea of "snapshot isolation" in the context of creating a database for an airline. Should airlines, if they can increase their overall performance, go with a strategy that doesn't lend itself to serialization?arrow_forwardDistributed database systems, like other distributed systems, have an issue with concurrency management, which is similar to the problem that other distributed systems have. Considering that pieces are not duplicated, is it required to impose concurrency management methods such as 2PL (Two-phase locking) on a system? Explain.arrow_forwardStart with a database transaction. We'll look on the bright side when we meet again.arrow_forward
- Consider a database with tables with parent tables and tables without parent tables. What differentiates controllers used to manage data for tables with and without parent tables?a) The routing algorithm to the controllerb) The number of methods in the controllerc) The controller method parameters, redirections, and model manipulationsd) Views are called from the models instead.arrow_forwardTake, for example, a snapshot-isolated database management system like the one employed by an airline. I was wondering if you could provide me an example of a non-serializable execution that the airline is willing to endure in exchange for greater speed.arrow_forwardTake a "snapshot isolation" as an example for a database used by an airline. Is the decision to go with a method that cannot be serialized justified in the event that airlines manage to improve their overall performance?arrow_forward
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