database

Android persistence library room example

Android save and retrieve object in couchbase lite

Android Couchbase Lite basic CRUD

remove and add an instance from a mongodb replica set

add an arbiter in a mongodb replica set

Mongodb mongod start and stop

Mongodb sparse index

Mongodb unique index

Mongodb index on single field

move collection between databases in mongodb

mongodb building a sharded environment

mongodb replica set

mongodb aggregation framework walk through by examples

mongodb authentication setting

mongodb aggregation queries vs sql queries

mongodb quick references for update queries

mongodb quick references for finding documents

mongodb basic access commands

MySQL: Duplicate a MySQL database

MySQL: Get database and table sizes