Hi Arati,
I would vote for Option #2 as a short term solution. Probably later we can consider using NoSQL DB or MariaDB which has Column_JSON type to store complex types. Thanks Georgy On Thu, Feb 13, 2014 at 8:12 AM, Arati Mahimane < arati.mahim...@rackspace.com> wrote: > Hi All, > > I have been working on defining the Language pack database schema. Here > is a link to my review which is still a WIP - > https://review.openstack.org/#/c/71132/3. > There are a couple of different opinions on how we should be designing the > schema. > > Language pack has several complex attributes which are listed here - > https://etherpad.openstack.org/p/Solum-Language-pack-json-format > We need to support search queries on language packs based on various > criteria. One example could be 'find a language pack where type='java' and > version>1.4' > > Following are the two options that are currently being discussed for the > DB schema: > > *Option 1:* Having a separate table for each complex attribute, in order > to achieve normalization. The current schema follows this approach. > However, this design has certain drawbacks. It will > result in a lot of complex DB queries and each new attribute will require a > code change. > *Option 2:* We could have a predefined subset of attributes on which we > would support search queries. > In this case, we would define columns (separate tables > in case of complex attributes) only for this subset of attributes and all > other attributes will be a part of a json blob. > With this option, we will have to go through a schema > change in case we decide to support search queries on other attributes at a > later stage. > > I would like to know everyone's thoughts on these two approaches so that > we can take a final decision and go ahead with one approach. > Suggestions regarding any other approaches are welcome too! > > Thanks, > Arati > > > _______________________________________________ > OpenStack-dev mailing list > OpenStack-dev@lists.openstack.org > http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack-dev > > -- Georgy Okrokvertskhov Architect, OpenStack Platform Products, Mirantis http://www.mirantis.com Tel. +1 650 963 9828 Mob. +1 650 996 3284
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