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Database Transaction: Database Management System, Concurrency Control, Data Warehouse
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(Buch) |
Dieser Artikel gilt, aufgrund seiner Grösse, beim Versand als 2 Artikel!
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| Please note that the content of this book primarily consists of articles
available from Wikipedia or other free sources online. A database
transaction comprises a unit of work performed within a database
management system (or similar system) against a database, and treated in
a coherent and reliable way independent of other transactions.
Transactions in a database environment have two main purposes: 1. To
provide reliable units of work that allow correct recovery from failures
and keep a database consistent even in cases of system failure, when
execution stops (completely or partially) and many operations upon a
database remain uncompleted, with unclear status. 2. To provide
isolation between programs accessing a database concurrently. Without
isolation the program's outcomes are possibly erroneous. |
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i.d.R. innert 7-14 Tagen versandfertig
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