Python Lecture Notes

Importance of SQL and Database

• About SQL:

  • SQL stands for Structured Query Language.
  • Used for data management in databases.

• What is a Database?

  • A database is a well-managed collection of data.
  • It makes data organization and access easier.

• Need for Database:

  • Needed for data collection and management.
  • To avoid data replication, inconsistency, and other issues.

SQL Basics

• SQL Operations:

  • Create, insert, update, and delete data.
  • SELECT queries are used to retrieve data.

• Database and Table Structure:

  • Tables have rows and columns.
  • Relational Database Management System (RDBMS) manages data in tables.

Database Management

• Data Management in Database:
  • Maintaining data integrity and security is important.
  • Transactions enhance security.

Functions in SQL

• SQL Functions:
  • String and date functions have many uses in SQL.
  • They are used for data processing and formatting.

Practical Aspects

• Practical Planning:
  • Lab sessions and practical work applying SQL.
  • Real-time data management theories and problems.

Other Importance

• SQL Installation:

  • Install in various versions (10G, 11G, 12C).
  • Installing and managing databases in the system.

• SQL Tools and Languages:

  • Review of different tools and languages using SQL.

Discussion and Class Understanding

• Clarifying Doubts:

  • Clarifying doubts after the class ends.

• Assignments and Group Discussion:

  • Completing assignments after each chapter and discussing in groups is necessary.