erdb - an educational relational dbms

A relational database just for fun and learning purposes. Storage layout is Postgres inspired. Work is still very much in progress. Quite a lot of things are missing.

Transaction isolation is achieved by MVCC. READ COMMITTED and REPEATABLE READ are already implemented (READ UNCOMMITTED will never work, maybe SERIALIZABLE some day).

Examples of READ COMMITTED transactions (default isolation level)

SELECT

DELETE

UPDATE

Example of REPEATABLE READ transaction