Structured Query Language (SQL) is the standard language for interacting with relational databases, enabling efficient data Querying and manipulation. It serves as a common interface for Databases and data lakes.

Features:

  • Declarative language for storing and querying structured data.
  • Transactional properties enhance speed and efficiency.

Good Practices

Capitalization:

  • Use uppercase for SQL keywords for better readability.
  • Use lowercase for table and column names.

Quotes:

  • Use double quotes for SQL identifiers (table and column names).
  • Use single quotes for string values.

Database Techniques