Optimized Database Schema-Advanced DB Schema Design

Example

Splitting a single table containing user information and their orders into two separate tables: Users and Orders, to prevent data duplication.

Scenario

In a CRM system, normalization reduces storage space and improves data consistency by ensuring that updates to user information are made in just one place.

Example

Creating an index on the 'last_name' column in a 'customers' table to expedite search queries by last name.

Scenario

An online bookstore can use indexing to quickly find all books purchased by a particular customer, enhancing the customer service experience.

Example

Using a foreign key in an 'order_items' table that references the 'orders' table to ensure that every order item is linked to a valid order.

Scenario

In an e-commerce platform, foreign key constraints prevent the insertion of order items that do not correspond to any existing order, maintaining data integrity.

Example

Dividing a large 'transactions' table into smaller partitions based on transaction dates to improve query performance on historical data.

Scenario

A financial reporting system can partition data by fiscal quarter, enabling faster access to transactions within a specific time frame for analysis and reporting.

Example

Implementing row-level locking mechanisms to allow multiple users to safely update different rows in the same table simultaneously.

Scenario

In a multi-user accounting application, concurrency control enables simultaneous updates to different accounts without risking data corruption.