This article describes the process of mapping objects to relational databases, also known as O/R mapping, and how to implement those mappings.

Jun 3, 2024 · There is a design technique that's summarized in the following tag class-table-inheritance under the info tag. This allows you to use subclass tables to "extend" a class table, …

Apr 26, 2025 · One of its key features is the ability to map Python classes to database tables, allowing you to use Python objects to represent rows in a database table. This is known as an …

Mapping objects to tables involves creating or updating data stored in a relational database. This figure illustrates such a mapping. Mapping involves: Mapping objects to one or many tables. …

Relational mappings transform object data members to relational database fields. Use them to map simple data types including primitives (such as int), JDK classes (such as String), and …

Mapping a table to a class is the first pattern you cannot do without when building a knowledge graph from a data source. It consists in associating a table in the relational data source to a class.

Mapping our running example to tables results in five tables - one for each class. An instance of a SalariedEmployee is represented in one of these five tables.

Relational databases can’t handle this directly, so you use an Association Table Mapping (248) (see Figure 3.7) to cre-ate a new relational table just to handle the many-to-many association.

Object-Relational Mapping or ORM is a technique for converting data between Java objects and relational databases. ORM converts data between two incompatible type systems (Java and …

May 19, 2014 · I've taken the following class diagram and mapped it into a table design with appropriate keys etc... Am i thinking along the right lines here?