Understand how and why the separation between layers and tiers in serviceoriented architectures holds software developers back from being truly productive and how you can remedy that problem.ampampnbspStrong processes and development tools can help developers write more complex software but large amounts of code can still be directly deduced from the underlying database model hampering developer productivity. In a world with a shortage of developers this is bad news. More code also increases maintenance costs and the risk of bugs meaning less time is spent improving the quality of systems.ampampnbsp You will learn that by making relationships firstclass citizens within an itemrelationship model you can develop an extremely compact query language inspired by natural language.