Many consultants and health system staff have experience using CCL in some capacity, but the level of experience can vary. JASE Health has robust experience using CCL in a  wide-variety of ways to serve whatever the need. The most common way to use CCL is custom data extraction and reporting. CCL can be used to feed downstream systems with data in batch or near real-time. With CCL you can access any data that is stored in the Cerner Millennium data model and format the data to meet any specification.

System performance is paramount when developing CCL extracts. Many clients have experienced first-hand the impact of a poor performing query. CCL programs must be written in the most efficient manner possible, using database indexes to look-up information from the database. When pulling historic information, it can also be challenging to pull a year or more of data. This can be solved by executing the extracts in smaller increments to minimize system resources used by the program.

CCL programs can also be used to interact with the Cerner Millennium middleware. The middleware is a set of services that read and write to the Cerner Millennium data model. CCL programs or services are often used with MPages to read or write information from within a MPages component. Another common use for CCL services is in conjunction with Discern Expert Rules. Rules can be triggered on conditions to alert users to important information. The CCL services can be called to collect and present information within the alert dialog.