Hi slefevre,
There are two products available by Symantec
1) Enterprise Edition - Designed for medium, large organizations
2) Small Business Edition - Designed for Small organizations, it supports upto only 100 computes, it has less features compare to Enterprise Edition.
Check following thread for more details.
http://bit.ly/pQAIoe
About your query, it's not possible to manually interfere with those settings in SBE, SEPM will do the database maintenance in the background.
New tool is created to shrink Embedded database . This tool is for both EE and SBE.
The option in EE is to truncate the transaction files & rebuilt Indexes, not the database. For both EE and SBE the database file itself will become bloated overtime.
Please check following link for more details
https://www-secure.symantec.com/connect/downloads/shrink-symantec-endpoint-protection-manager-121-embedded-database