MongoDB

Document-Oriented Database John Sercel

Document vs. Relational Relational database Tables -> Records Defined schema Document-oriented database Collections -> Documents No schema John Sercel | 2

MongoDB ,[object Object],C, C++, Java, Javascript, Perl, PHP, Python, Ruby, etc. OS Support OS X, Linux, Windows, Solaris Open Source, Free Support Community Commercial John Sercel | 3

Installation: Windows, Linux ,[object Object],Download Unzip the archive file Create a data directory: /data/db (c:atab) Start MongoDB Server ./bin/mongod[binongod.exe] Start MongoDB Client ./bin/mongo [binongo.exe] John Sercel | 4

MongoDB Basics ,[object Object],List databases: show dbs Select database: use [db name] Insert document db.myCollection.insert({‘myKey’ : ‘myValue’, ‘anotherKey’ : ‘anotherValue’ }) John Sercel | 5

MongoDB Basics ,[object Object],db.myCollection.find() db.myCollection.find({‘name’ : ‘John Doe’}) ,[object Object],SELECT * FROM myTable SELECT * FROM myTable WHERE name = ‘John Doe’ John Sercel | 6

Connecting MongoDB: PHP ,[object Object],Source, PHP Extension Community Library (PECL) Update configuration file Restart server software John Sercel | 7

Connecting MongoDB: PHP ,[object Object],Insert new document $connection = new Mongo(); $collection = $connection->databaseName->collectionName; $document = array( "name" => “John Doe”); $collection->insert($document); Select document(s) $documents = $collection->find(); John Sercel | 8

Why Document-Oriented? ,[object Object],Non-standard field set in each entity Speed vs. Normalization Normalization decreases redundancy, and speed. Relational operations are expensive Simple data storage preferable for heavy use BigTable, Cassandra John Sercel | 9

References MongoDB. (2009a). Mongodb-10gen confluence website. Retrieved February 5, 2010 from http://www.mongodb.org/ MongoDB. (2009b). Quickstart-mongodb. Retrieved February 8, 2010 from http://www.mongodb.org/display/DOCS/Quickstart / MongoDB. (2009c). Developer zone-mongodb. Retrieved February 8, 2010 from http://www.mongodb.org/display/DOCS/Developer+Zone/ The PHP Group. (2009). Php manual-mongo. Retrieved February 5, 2010 from http://us3.php.net/manual/en/mongo.manual.php John Sercel | 10

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