Improving Database Performance and Security with Teradata Write-Ahead Logic (WAL)
Accessing data has always been the bottleneck of database systems. Once the data resides in the main memory, it can be promptly processed. Although SSDs are now predominantly used instead of hard disks, copying data into the main memory remains the slowest. The Teradata Write-Ahead Logging (WAL) feature enhances DML performance and boosts data security.