SQL Server Real-World Projects: Banking System

Create a Customer and Account Schema

Design and create SQL Server tables for Customers and Accounts with appropriate keys and constraints.

Expected output: Two tables with correct relationships and constraints created in SQL Server.

Hint: Include primary keys, foreign keys, and data types suitable for banking data.

Implement Withdrawal Stored Procedure

Write a stored procedure to withdraw an amount from an account ensuring balance does not go negative.

Expected output: A stored procedure that safely processes withdrawals with error handling.

Hint: Use transactions and check the balance before updating.

Data consistency is ensured by using transactions with BEGIN TRANSACTION, COMMIT, and ROLLBACK statements to make operations atomic and recoverable in case of errors.

Essential tables include Customers, Accounts, and Transactions, each with primary keys and relationships to model the banking data accurately.

Stored procedures encapsulate business logic, improve security by restricting direct table access, and enhance performance through precompiled execution plans.