SQL Anywhere Studio Security Guide
Keeping Your Data Secure
Encrypting a database
Controlling strong encryption
Although you can't simply turn strong encryption on or off in an existing database, you can choose from two options when it comes to implementing strong encryption. You can either create a database from scratch with strong encryption, or you can rebuild an existing database and change the encryption status at that time. Rebuilding the database unloads all of the data and schema of an existing database, creates a new database (at which point you can change a variety of settings including strong encryption status), and reloads the data into the new database. You need to know the key to unload a strongly encrypted database.
For more information on these features, see