We will sometimes want to interact with our database and use its results in a specific programming language. E.g. to build web applications or data pipelines in a specific language (Ruby, Python, Javascript, etc.) That’s where DBAPIs come in.
- A DBAPI
- provides a standard interface for one programming language (like Python) to talk to a relational database server.
- is a low level library for writing SQL statements that connect to a database
- is also known as database adapters
- Different DBAPIs exist for every server framework or language + database system
- Database adapters define a standard for using a database (with SQL) and using the results of database queries as input data in the given language.
- Turn a selected SELECT * FROM some_table; list of rows into an array of objects in Javascript for say a NodeJS adapter; or a list of tuples in Python for a Python adapter.
Example across languages and server frameworks
- For Ruby (e.g. for Sinatra, Ruby on Rails): pg
- For NodeJS: node-postgres
- For Python (e.g. for Flask, Django): pyscopg2
