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Kenneth Reitz
63 lines
2.2 KiB
ReStructuredText
63 lines
2.2 KiB
ReStructuredText
`|Redis Documentation| <index.html>`_
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**FromSqlToDataStructures: Contents**
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`Introduction (IDEA MORE THAN A DRAFT) <#Introduction%20(IDEA%20MORE%20THAN%20A%20DRAFT)>`_
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`Data Structures <#Data%20Structures>`_
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`Dude where is my SELECT statement? <#Dude%20where%20is%20my%20SELECT%20statement?>`_
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`LISTs <#LISTs>`_
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`SETs <#SETs>`_
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`SORT to the rescue <#SORT%20to%20the%20rescue>`_
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`SORT BY <#SORT%20BY>`_
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`HASHEs <#HASHEs>`_
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FromSqlToDataStructures
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=======================
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Introduction (IDEA MORE THAN A DRAFT)
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=====================================
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**¿Coming from SQLand?** *¿Who doesn't?* Redis is simple,
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*primitive* when comapred to the world you are used to in the world
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of Relational Database Managers (RDBMS) and Structure Query
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Language (SQL), here you will find insight to build bridges between
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both worlds to model real life problems.
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Data Structures
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---------------
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When I was young, happy and single ;) I studied **Data Structures**
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at the university, actually I learnt Data Structures and Algorithms
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*before* learning anything about Databases, and particularly RDBMS
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and SQL. This is natural because you need to know about Data
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Structures and Algorithms to understand a Database.
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Redis can be seen as a **Data Structures Server**, a very simple
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interface to a extremly fast and efficient
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Dude where is my SELECT statement?
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----------------------------------
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LISTs
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-----
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In SQL there is no such thing as a "natural" order, a SELECT
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statement without a ORDER BY clause will return data in a undefined
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order. In Redis `LISTs <LISTs.html>`_ address the problem of
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natural ordering, ...
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SETs
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----
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So you have a bunch of unordered data,
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SORT to the rescue
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------------------
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But sometimes we *need* to actually sort a LIST in a order
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different from its natural or take a SET and have it ordered, there
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is where the *fast* SORT commands comes handy...
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SORT BY
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~~~~~~~
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Just SORTing keys would be kind of boring, sometimes useless right?
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Well, you can SORT...
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HASHEs
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------
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Umm, sorry you will have to wait for a
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`upcoming version of Redis <RoadMap.html>`_ to have Hashes, but
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here are Idioms you should house to manage Dictionary like data...
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.. |Redis Documentation| image:: redis.png |