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What Is Structured Query Language (SQL)?

Structured Query Language, or SQL, is a programming nomenclature used to do set operations (like union, intersect, and minus) to organize and retrieve information in relational databases, based on “set theory and relational algebra.” According to DAMA International’s Data Management Body of Knowledge, in any system that uses SQL, “data elements or attributes, categorized into […]

SQL Support for UML Associations

Click to learn more about author Michael Blaha. The UML (Unified Modeling Language) is a popular Data Modeling notation that arose from the programming community, but it is also applicable to databases. The UML has a variety of models, one of which is the class model. The UML class model is essentially just a dialect […]

Data Interchange Models: What are They?

Click to learn more about author Michael Blaha. Let’s continue last month’s discussion about different kinds of data models and look at data interchange models. My interest in this topic was piqued by several encounters with overly complex data interchange models. Data Interchange Model A data interchange model provides the means to convey data among […]

State of the Art of Data Modeling?

Click to learn more about video blogger Thomas Frisendal. When I googled “state of the art” “data modelling” (European spelling), I got: An Overview of State-of-the-Art Data Modelling – Events – ACSE – The An Overview of State-of-the-Art Data Modelling Data Modelling: Introduction and State of the Art – Springer Type Systems: Introduction and State of […]