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Databases Beginner

What is Connection String?

A formatted string containing all parameters needed to establish a connection to a database server.

Connection strings specify the database driver, host, port, database name, username, password, and options. PostgreSQL format: postgresql://user:password@host:5432/dbname?sslmode=require.

Best practices include storing connection strings in environment variables (never in code), using SSL/TLS for encrypted connections, connection pooling, and using separate credentials per environment. Some frameworks accept individual parameters instead of a single string.

Related Terms

Partitioning
A technique of dividing large database tables into smaller, more manageable segments while maintaining a single logical table.
Cursor
A database object that enables row-by-row processing of query results, useful for operations that cannot be done in bulk.
Query Optimization
The process of improving database query performance through indexing, query rewriting, and schema design techniques.
Database Proxy
A middleware server that sits between applications and databases, providing connection pooling, load balancing, and query routing.
Trigger
A database object that automatically executes a specified function when certain events (INSERT, UPDATE, DELETE) occur on a table.
Upsert
A database operation that inserts a new row if it does not exist, or updates the existing row if it does.
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