In a multilevel secure database management system (MLS/ DBMS) users cleared at different security levels access and share a database consisting of data at a variety of sensitivity levels. The system… (More)
Use of reusable software is key to significant gains in programmer productivity. However, in order to effectively develop it, measurable characteristics of reusability supported by guidelines for… (More)
We describe the extensions to the relational query language SQL that are necessary to support multilevel security in database management systems. In a multilevel secure database with data at a… (More)