The Art of Changing | Confessions of a Pragmatic Intellectual's Mind on The Constant in Life, Change!
Impedance Mismatch problem: O/R issuesSQL: does not work well with large clustersGoogle: BigtableAmazon: Dynamo=> NoSQLOrigin: a Twitter hashtag to advertise a single meeting #nosql non-relational open-source cluster-friendly schema-less when you are getting a price from a row, you are utilizing schema, but when you don’t have schema there is no guarantee data is there 21st…
Key / Valye (HashMap)Tabular (BigTable)Document Oriented no Joinsno Complex Transactionsno SQL databasse -> databasetable -> collectionrow -> document JSON style document (BSON on the mongoDB servers) no predefined schematable has schemacollection does not have schema we do not need to pre-create the collection, first insertion will create the collection _id : timestamp+machine id+process id+counter db.posts.find$gt…