Hands-On Software Engineering with Python

Supporting objects for data persistence

It's almost unheard of for a database installation to not require some credentials for access in a production system, and there are other parameters that need to be kept track of across the various object types whose data will be saved in the data store. Since those parameters will be common for all of the different object types in use (for the most part), creating a mechanism that can be used to gather them all up seems like a logical first step. The common parameters that will most likely be needed were noted in the RDBMS exploration earlier, and are as follows:

• host
• port
• database
• user 
• password

By the time hms_sys is deployed to a production environment, these will almost certainly be saved in ...