lab 1 - The goal of the first assignment is to create a PostgreSQL data schema with 6 tables.
lab 2 - UNIQUE constraints and some restrictions on NULLs via tables and querie requests.
lab 3 - Perform SQL to “combine data” from two tables, Add foreign key constraints, Add general constraints, Write unit tests for constraints, Create and query a view Create an index
lab 4 - practical implementation of sql ( scripts, stored functions, all previous) via java. script will load data into tables based off of given parameters.