postgresql - Ways to implement data versioning in PostreSQL -

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can share thoughts how implement data versioning in postgresql. (i've asked similar question regarding cassandra , mongodb. if have thoughts db better please share)

suppose need version records in simple address book. address book records stored in 1 table without relations simplicity. expect history:

  • will used infrequently
  • will used @ once present in "time machine" fashion
  • there won't more versions few hundred single record.
  • history won't expire.

i'm considering following approaches:

  • create new object table store history of records copy of schema of addressbook table , add timestamp , foreign key address book table.

  • create kind of schema less table store changes address book records. such table consist of: addressbookid, timestamp, fieldname, value. way store changes records , wouldn't have keep history table , address book table in sync.

  • create table store seralized (json) address book records or changes address book records. such table looks follows: addressbookid, timestamp, object (varchar). again schema less wouldn't have keep history table address book table in sync. (this modelled after simple document versioning couchdb)

i second approach: have table actual working set , history changes (timestamp, record_id, property_id, property_value). includes creation of records. third table describes properties (id, property_name, property_type), helps in data conversion higher in application. can track changes of single properties.

instead of timestamp have int-like, wich increment every change per record_id, have actual version.


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