This post provides a step-by-step guide on how to encrypt specific database tables with CockroachDB. The process involves creating an encryption key, starting a CockroachDB cluster with encrypted and unencrypted stores, creating PII and non-PII tables, assigning them to the corresponding stores, and verifying that the encryption is set up correctly. This approach allows for selective encryption of sensitive data while storing other data in plaintext, providing a balance between security and performance.