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InfoQ Homepage Data Access Content on InfoQ

  • Starcounter vs. ORM and DDD

    The so-called “object-relation impedance mismatch” has long been discussed in engineering circles. Most attempts at a solution rely try to mask the issue by pulling logic into the application tier. Kostiantyn Cherniavskyi looks at these issues and shows how many of them can be solved with hybrid databases such as Starcounter.

  • Metadata-Driven Design: Designing a Flexible Engine for API Data Retrieval

    Bulk data is commonly accessed via files & FTP. As the world moves toward APIs to facilitate collaboration, what are the requirements for data APIs? This article describes a meta-data driven architecture for bulk data ingestion. Two APIs operate in parallel to provide data changes as well as the data records themselves. An example demonstrates how API responses are parameterized using meta-data.

  • Data Modeling in Graph Databases: Interview with Jim Webber and Ian Robinson

    Data modeling with Graph databases requires a different paradigm than modeling in Relational or other NoSQL databases like Document databases, Key Value data stores, or Column Family databases. InfoQ spoke with Jim Webber and Ian Robinson about data modeling efforts when using Graph databases.

  • ActiveJPA – Active Record Pattern for JPA

    ActiveJPA is a Java implementation of Martin Fowler’s Active Record pattern that wraps around JPA and provides useful abstractions to simplify data access. With ActiveJPA, models themselves act as a DAO and interact with the database without requiring additional code for the DAL. In this article the primary committer discusses ActiveJPA and provides plenty of usage examples.

  • Don’t jump the SQL ship just yet

    The SQL language has been evolving steadily over the last two decades. At the same time, the verbosity caused by the JDBC API in Java client code and the lack of first class SQL support within the Java language have led to the introduction of ORMs such as Hibernate, which was later standardised into JPA and the Criteria API.If SQL and JPA are diverging, where will our data interaction patterns go?

  • Building a RESTful Web Service with Spring Boot to Access Data in an Aerospike Cluster

    Spring Boot allows you to build Spring based applications with little effort on your part. Aerospike is a distributed and replicated in-memory database that is ACID compliant. This article will take you through creating a simple RESTful web service with Spring Boot and Aerospike.

  • Book Review: Building Applications with the Android SDK, 2nd Edition

    The Android Developer’s Cookbook: Building Applications with the Android SDK, 2nd Edition is a collaborative effort by Ronan Schwarz, Phil Dutson, James Steele and Nelson To. The authors have succeeded in providing a solid reference book. A book for mobile app developers that can serve as an authoritative guide for newbies and intermediate to expert devs for creating awesome mobile apps.

  • How to Provide SQL Access to NoSQL Type Data using Multi-Record Type

    In this article, author Randal Hoff shows how to use Multi-Record Type pattern to provide both NoSQL and SQL access to c-treeACE data that combines multiple schemas in a single table.

  • Refactoring Legacy Applications: A Case Study

    To refactor legacy code, the ideal is to have a suite of unit tests to prevent regressions. However it's not always that easy. This article describes a methodology to safely refactor legacy code.

  • The Datomic Information Model

    Rich Hickey, the author of Clojure, explains the information model of Datomic - a new database designed as a composition of simple services, combining the capabilities of RDBMS and scalability of NoSQL.

  • The Architecture of Datomic

    Rich Hickey, the author of Clojure, explains the architecture of Datomic - a new database designed as a composition of simple services, combining the capabilities of RDBMS and scalability of NoSQL.

  • arrayDB, a New and Easy PHP ORM

    Most ORM libraries make you write a new class for each item you want to keep in the database. Extending this and that for no apparent reason is repetitious and capricious. Using techniques that can be applied to most languages, arrayDB looks at simplifying the whole process by doing away with statically defined classes.

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