Adaptive Server Enterprise (ASE) is Sybase Corporation's flagship relational database product.

ASE is a direct descendant of Sybase SQL Server as it was a change in name only starting from version 11.5 in 1996. In 1998, ASE 11.9.2 was rolled out with support for row-level locking and distributed joins and improved SMP performance. ASE 12.0 was released in 1999 providing support for Java, high availability and distributed transaction management. In 2001, ASE 12.5 was released providing features such as dynamic memory allocation and support for XML and SSL among others.