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adding why databases are necessary
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‎change-log.html‎

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@@ -81,6 +81,7 @@ <h1>Change Log</h1>
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<h2>2014</h2>
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<h3>March</h3>
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<ul>
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<li>Added why for databases.</li>
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<li>Updating best resources page with newsletters and a few additional beyond
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the basics resources.</li>
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<li>Adding 'why is this necessary' sections to servers, operating systems,

‎databases.html‎

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<div class="col-md-8">
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<h1>Databases</h1>
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<p>A database is an abstraction on top of an operating system's file system to
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ease creating, reading, updating, and deleting persistent data. The
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database storage abstraction most commonly used in Python web development is
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sets of relational tables. Alternative storage abstractions are explained in
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the <a href="../no-sql-datastore.html">NoSQL</a> section of this guide.</p>
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ease creating, reading, updating, and deleting persistent data. </p>
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<h2>Why are databases necessary?</h2>
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<p>At a high level web applications store data and present it to users in a
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useful way. For example, Google stores data about roads and provides
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directions to get from one location to another by driving through the
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<a href="https://www.google.com/maps/">Maps</a> application. Driving directions are
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possible because the data is stored in a structured way. </p>
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<p>Databases make structured storage reliable and fast. They also give you a
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mental framework for how the data should be saved and retrieved instead of
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having to figure out what to do with the data every time you build a new
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application.</p>
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<h2>Relational databases</h2>
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<p>The database storage abstraction most commonly used in Python web development
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is sets of relational tables. Alternative storage abstractions are explained
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in the <a href="../no-sql-datastore.html">NoSQL</a> section of this guide.</p>
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<p>Relational databases store all data in a series of tables. Interconnections
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between the tables are specified as <em>foreign keys</em>.</p>
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<p>Databases storage implementations vary in complexity. SQLite, a database

‎feeds/all.atom.xml‎

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<?xml version="1.0" encoding="utf-8"?>
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<feed xmlns="http://www.w3.org/2005/Atom"><title>Matt Makai</title><link href="http://www.fullstackpython.com/" rel="alternate"></link><link href="http://www.fullstackpython.com/feeds/all.atom.xml" rel="self"></link><id>http://www.fullstackpython.com/</id><updated>2014-03-15T09:20:22Z</updated></feed>
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<feed xmlns="http://www.w3.org/2005/Atom"><title>Matt Makai</title><link href="http://www.fullstackpython.com/" rel="alternate"></link><link href="http://www.fullstackpython.com/feeds/all.atom.xml" rel="self"></link><id>http://www.fullstackpython.com/</id><updated>2014-03-15T09:51:43Z</updated></feed>

‎source/content/pages/06-databases/0601-databases.markdown‎

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# Databases
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A database is an abstraction on top of an operating system's file system to
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ease creating, reading, updating, and deleting persistent data. The
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database storage abstraction most commonly used in Python web development is
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sets of relational tables. Alternative storage abstractions are explained in
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the [NoSQL](../no-sql-datastore.html) section of this guide.
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ease creating, reading, updating, and deleting persistent data.
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## Why are databases necessary?
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At a high level web applications store data and present it to users in a
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useful way. For example, Google stores data about roads and provides
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directions to get from one location to another by driving through the
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[Maps](https://www.google.com/maps/) application. Driving directions are
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possible because the data is stored in a structured way.
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Databases make structured storage reliable and fast. They also give you a
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mental framework for how the data should be saved and retrieved instead of
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having to figure out what to do with the data every time you build a new
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application.
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## Relational databases
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The database storage abstraction most commonly used in Python web development
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is sets of relational tables. Alternative storage abstractions are explained
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in the [NoSQL](../no-sql-datastore.html) section of this guide.
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Relational databases store all data in a series of tables. Interconnections
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between the tables are specified as *foreign keys*.

‎source/content/pages/change-log.markdown‎

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## 2014
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### March
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* Added why for databases.
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* Updating best resources page with newsletters and a few additional beyond
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the basics resources.
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* Adding 'why is this necessary' sections to servers, operating systems,

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