Database
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Write Ahead Log
Quick Definition
Persistence mechanism writing changes to log before database
Full Definition
A persistence mechanism where changes are written to a log before being applied to the actual database.
Examples
crash recovery, transaction durability, replication
Related Terms
acid
transaction
durability
More Database Terms
Database Migration
Version-controlled changes to database schema
B-Tree Index
Self-balancing tree index for efficient sorted data operations
Trigger
Special procedure that auto-executes on table events
Foreign Key
Field referencing primary key to establish table relationships
Time-Series Database
Database optimized for time-stamped data storage
Sharding
Horizontal data partitioning across multiple instances