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Inheritance is a means of managing both re-use and complexity. As we will see, the relational model has no direct counterpart of inheritance, which creates a dilemma for the data modeler mapping an ...
Keyword Search Over Relational Databases(KSORD) has been widely studied in recent years. However, existing KSORD methods are usually based on schema graph or data graph and they are actually ...
The third part describes two object-relational extensions to the data model. One of them comes with MS Visio, while the other is ODL (Object Definition Language) defined by ODMG (Object Database ...
Objects on the diagram are created by dragging the icons from the left frame on the screen (two groups are important: "Entity Relationship" i "Object Relational"). If you want to access the database ...
The landscape changed radically when Ted Codd proposed a new data model and a structured query language (SQL) based on the mathematical concept of relations and foreign-/primary-key relationships. 4 ...
This paper extends unsupervised statistical outlier detection to the case of object-relational data, based on probabilistic modeling. Object-relational data represent a complex heterogenous network, ...
The mapping between Java objects and a relational database is achieved with the help of Java language metadata annotations and/or XML deployment descriptors (usually XML descriptors are optional).
(Diagram of the Steps of the data journey: Step 1 - define, find, gather; Step 2 - explore, clean, describe; Step 3 - analyze, model; Step 4 - tell the story. The data journey is supported by a ...