Using Styles in Design

This chapter discusses the use of architectural styles in software design. It presents a set of design rules to provide guidelines for the choices of architectural styles. Making several designs in different styles and then comparing them in depth is a good idea for making a good design. Architectural styles can be combined together to make an architectural design. There are three different forms of heterogeneous styles. Hierarchical heterogeneity means a component is in an architectural style different from the whole system's style. Simultaneous heterogeneity is when a system can be regarded as two architectural styles at the same time depending on the view to the system. Locational heterogeneity is when a part of the system can be regarded as in one style while another part is in a different style. Combination of architectural styles in one design plays a significant role in software design practices. The chapter also presents several quality attributes to compare the advantages and disadvantages of the designs.