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| author | Lorry Tar Creator <lorry-tar-importer@baserock.org> | 2015-02-17 17:25:57 +0000 |
|---|---|---|
| committer | <> | 2015-03-17 16:26:24 +0000 |
| commit | 780b92ada9afcf1d58085a83a0b9e6bc982203d1 (patch) | |
| tree | 598f8b9fa431b228d29897e798de4ac0c1d3d970 /docs/programmer_reference/transapp_why.html | |
| parent | 7a2660ba9cc2dc03a69ddfcfd95369395cc87444 (diff) | |
| download | berkeleydb-master.tar.gz | |
Diffstat (limited to 'docs/programmer_reference/transapp_why.html')
| -rw-r--r-- | docs/programmer_reference/transapp_why.html | 56 |
1 files changed, 33 insertions, 23 deletions
diff --git a/docs/programmer_reference/transapp_why.html b/docs/programmer_reference/transapp_why.html index b8573e72..f3f381b2 100644 --- a/docs/programmer_reference/transapp_why.html +++ b/docs/programmer_reference/transapp_why.html @@ -14,7 +14,7 @@ <body> <div xmlns="" class="navheader"> <div class="libver"> - <p>Library Version 11.2.5.3</p> + <p>Library Version 12.1.6.1</p> </div> <table width="100%" summary="Navigation header"> <tr> @@ -22,9 +22,7 @@ </tr> <tr> <td width="20%" align="left"><a accesskey="p" href="transapp.html">Prev</a> </td> - <th width="60%" align="center">Chapter 11. - Berkeley DB Transactional Data Store Applications - </th> + <th width="60%" align="center">Chapter 11. Berkeley DB Transactional Data Store Applications </th> <td width="20%" align="right"> <a accesskey="n" href="transapp_term.html">Next</a></td> </tr> </table> @@ -38,33 +36,47 @@ </div> </div> </div> - <p>Perhaps the first question to answer is "Why transactions?" There are -a number of reasons to include transactional support in your applications. -The most common ones are the following:</p> + <p> + Perhaps the first question to answer is "Why transactions?" + There are a number of reasons to include transactional support + in your applications. The most common ones are the + following: + </p> <div class="variablelist"> <dl> <dt> <span class="term">Recoverability</span> </dt> - <dd>Applications often need to ensure that no matter how the system or -application fails, previously saved data is available the next time the -application runs. This is often called Durability.</dd> + <dd> + Applications often need to ensure that no matter + how the system or application fails, previously saved + data is available the next time the application runs. + This is often called Durability. + </dd> <dt> <span class="term">Atomicity</span> </dt> - <dd>Applications may need to make multiple changes to one or more databases, -but ensure that either all of the changes happen, or none of them -happens. Transactions guarantee that a group of changes are atomic; -that is, if the application or system fails, either all of the changes -to the databases will appear when the application next runs, or none of -them.</dd> + <dd> + Applications may need to make multiple changes + to one or more databases, but ensure that either all + of the changes happen, or none of them happens. + Transactions guarantee that a group of changes are + atomic; that is, if the application or system fails, + either all of the changes to the databases will appear + when the application next runs, or none of + them. + </dd> <dt> <span class="term">Isolation</span> </dt> - <dd>Applications may need to make changes in isolation, that is, ensure that -only a single thread of control is modifying a key/data pair at a time. -Transactions ensure each thread of control sees all records as if all -other transactions either completed before or after its transaction.</dd> + <dd> + Applications may need to make changes in + isolation, that is, ensure that only a single thread + of control is modifying a key/data pair at a time. + Transactions ensure each thread of control sees all + records as if all other transactions either completed + before or after its transaction. + </dd> </dl> </div> </div> @@ -79,9 +91,7 @@ other transactions either completed before or after its transaction.</dd> <td width="40%" align="right"> <a accesskey="n" href="transapp_term.html">Next</a></td> </tr> <tr> - <td width="40%" align="left" valign="top">Chapter 11. - Berkeley DB Transactional Data Store Applications - </td> + <td width="40%" align="left" valign="top">Chapter 11. Berkeley DB Transactional Data Store Applications </td> <td width="20%" align="center"> <a accesskey="h" href="index.html">Home</a> </td> |