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Published byClaud Allen Modified over 8 years ago
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Iran Hutchinson
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I work for InterSystems who drives the new http://globalsdb.org NoSQL project. http://globalsdb.org Email: iran.hutchinson@intersystems.comiran.hutchinson@intersystems.com Twitter: #iranic Skype: chatwithiran
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… NoSQL Databases Understanding what they are Understanding how to leverage their strengths Understanding their weaknesses Staying away from hype and religious wars Fighting your developer demon
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Edgar Frank “Ted” Codd Known for 12 Rules (0 ~ 12) for Relational Data Systems
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Rule 1: The information Rule All information is represented in 1 and only 1 way, namely by values in column positions within rows of tables Rule 12: The no subversion Rule If the system provides a low-level (record-at-a- time) interface, then that interface cannot be used to subvert the system i.e. relational security or integrity constraints.
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Simple APIs Java Example: Document.save(myObject) Seamless language integration No impedance mismatch Designed to be horizontally scalable (elastic) Flexible data model Majority free and/or Open Source Free and Commercial production support
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Proven Available talent / Well-known AD-Hoc querying Scalable (limits?) Free and Commercial production support
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Interface for data access Limited horizontal scalability? Impedance mismatches Programming model In-flexible data model
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Does not include the underlying data structure. B-tree and B+-trees can be fast and efficient The relational model + SQL can limit B-trees
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Class of data management systems inherently Non-relational Distributed Horizontally scalable With optional schemas Providing simple APIs Term Not-Only-SQL recently embraced Dave Kellog’s Blog Post Dave Kellog’s Blog Post
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No to ACID No to the impedance mismatch with SQL Dealing with Big Data and Web Scale High prices from RDBMS vendors Use commodity hardware Flexible data models It’s a cool movement ….
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NNo RRemember MUMPS? SSET ^Car("Door","Color")="BLUE” RRemember Multi-value/PICK MMATWRITE array.variable ON file.variable,id. …. EEver heard of the NoSQL RDB?
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Data Key-ValueDocumentColumnGraph
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This depends on your use case. Example http://www.mongodb.org/display/DOCS/Use+Cas es Compare your problems to others. Example: http://wiki.apache.org/hadoop/PoweredBy
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http://nosql-database.org/ lists 122 today. http://nosql-database.org/ Depends on your model selection. Most likely choose well-known project. Don’t forget about shared risk!
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Some solutions have no querying When available query languages differ Lack of general AD-Hoc querying – “no” SQL NOTE: Toad for CloudToad for Cloud
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Skills Data Model Data format Tools Standards?
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Some databases are not as proven Incomplete NoSQL solutions You write a larger data management tier You maintain your business code and infrastructure code You have to customize management and deployment technology and procedures
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Know your application Don’t forget the past lessons Consider a hybrid approach Fight the desire to Roll-Your-Own-DB Start small but significant
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Two Systems NoSQL + SQL/RDBMS Updates Real-time Asynchronous or Batch NoSQL SQL/RDB MS Data Mapper / Translato r
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One system does both NoSQL and SQL Data RelationalKey-ValueDocumentColumnGraph?
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InterSystems Caché supports SQL and NoSQL Production NoSQL for 20+ years APIs for.NET, Java, Perl, Python, etc. Expanding paradigms for more use cases. Comes the closest to approach 2 Data RelationalKey-ValueDocumentColumnGraph?
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Core of InterSystems Caché Free for development and production Simple APIs Java and JavaScript http://globalsdb.org http://globalsdb.org Sponsored by InterSystems Data ArrayDocument?
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Over time I think we will see NoSQL features in mainstream databases NoSQL offerings by more commercial companies Dominant open source / free NoSQL projects New definitions of enterprise databases
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Hadoop/Hbase Cassandra MongoDB CouchDB Riak Couchbase Neo4J
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InterSystems Caché SimpleDB Azure Table Storage Google App Engine Data Storage Mark Logic Server Infinite Graph Riak (has open source version) Berkely DB
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