Object-Relational Mapping

Turkish equivalent: Nesne-ilişkisel eşlemeDomain: Software Engineering

The mapping of object-oriented domain structures to relational database tables, columns, identities, and associations through a persistence layer.

Software Engineering Context

Object-Relational Mapping maps application objects and relationships onto relational tables and may provide identity management, lazy loading, unit-of-work behavior, and dirty checking. These conveniences do not remove SQL cost; query shape and fetch strategy still have to be engineered deliberately.

Conceptual Boundary

An ORM does not turn a relational database into an object store. Transaction isolation, indexes, locking, constraints, and execution plans remain part of the system's behavior.

Updated: 01.09.2026

Related technical publications

Publications whose title or summary directly references this concept.

Oracle Database and PL/SQL: Architecture, SQL, and Performance

A layered technical reference to Oracle Database and PL/SQL, from architecture, SQL, transactions and the optimizer to performance, RAC, Data Guard, modernization, JSON, and vector search.

High-Performance Java Data Systems

A comprehensive engineering note on latency, throughput, JVM behavior, JPA/Hibernate, JDBC, HikariCP, SQL, indexing, caching, Kafka, PostgreSQL, load testing, and capacity planning for high-performance Java data systems.

A History of Computing, Informatics, and Public Information Systems in Türkiye: From IBM 650 to KaraNET, PolNet, and e-Government

A source-based history of computing and public information systems in Türkiye, from punched-card processing and IBM 650 to Computer Engineering education, EARN, the Internet, KaraNET, TAFICS, TASMUS, TAYAS, PolNet, MERNİS, VEDOP, UYAP, TAKBİS, e-İçişleri, and the e-Government Gateway.

Steganography: The Science of Hidden Information

Steganography across text, images, audio, and video, covering LSB embedding, transform domains, watermarking, steganalysis, capacity, imperceptibility, robustness, and the boundary with cryptography.