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  1. Getting Started With DBeaver for CUBRID

    Written by Thim Thorn at Phnom Voar Software, Cambodia Introduction DBeaver is a free multi-platform database tool for developers, database administrators, analysts and all people who need to work with databases. It supports all popular databases: MySQL, PostgreSQL, SQLite, Oracle, DB2, SQL Server, Sybase, MS Access, Teradata, Firebird, Apache Hive, Phoenix, Presto, etc. DBeaver is running on Windows, Mac OS X and Linux. This document summarizes how to get started with DBeaver for CUBRID for Windows users. Installing DBeaver on a Windows To install DBeaver, open a web browser and go to Click Windows (Installer) under Community Edition. Follow the instructions on the installation screen. At “Choose Components,” if you already have a Java installed on your ma...
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  2. Getting Started with Cubrid Migration Toolkit Console Mode

    Written by Rathana Va at Phnom Voar Software, Cambodia Introduction CUBRID Migration Toolkit (CMT) Console is a tool to migrate the data and the schema from the source DB (MySQL, Oracle, CUBRID, etc) to the target DB (CUBRID). CMT Console mode is a separate product from the CMT GUI version. It could be useful for some cases like automating migration or linux command line mode. Installation Windows 1. Download through the link: 2. Extract the Zip file ​ Linux 1. Download through the link using web browser or wget command: 2. Extract the tar.gz file ​ tar -xf CUBRID-...
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  3. CUBRID INSIDE: Subquery and Query Rewriter (View Merging, Subquery Unnest)

    Written by SeHun Park on 08/07/2021   What is Subquery  A subquery is a query that appears inside another query statement. Subquery enables us to extract the desired data with a single query. For example, if you need to extract information about employees who have salary that is higher than last year’s average salary, you can use the following subquery:    It is possible to write a single query as above without writing another query statement to find out the average salary. Subquery like this has various special properties, and their properties vary depending on where they are written. scalar subquery: A subquery in a SELECT clause. Only one piece of data can be viewed. inline view: A subquery in the FROM clause. Multiple data inquiry is possible. subquery: A subquery in the WHERE clause. I...
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  4. CUBRID DBLink

    Written by DooHo Kang on 27/06/2022   What is CUBRID DBLink When retrieving information from a database, it is often necessary to retrieve information from an external database. Therefore, it is necessary to be able to search for information on other databases. CUBRID DBLink allows users to use the information on other databases.   CUBRID DBLink provides a function to inquire about information in the databases of homogeneous CUBRID and heterogeneous Oracle and MySQL.   * It is possible to set up multiple external databases, but when searching for information, it is possible to inquire about information from only one other database.   CUBRID DBLink Configuration CUBRID DBLink supports DBLink between homogeneous and heterogeneous DBLinks.   Homogeneous DBLink diagram   If you look at the conf...
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  5. CUBRID INTERNAL: CUBRID Double Write Buffer

    Written by MyungGyu Kim on 03/08/2022 INTRODUCTION Data in the database is allocated from disk to memory, some data is read and then modified, and some data is newly created and allocated to memory. Such data should eventually be stored on disk to ensure that it is permanently stored. In this article, we will introduce one of the methods of storing data on disk in CUBRID to help you understand the CUBRID database. The current version at the time of writing is CUBRID 11.2. DOUBLE WRITE BUFFER First of all, I would like to give a general description of the definition, purpose, and mechanism of Double Write Buffer. What is Double Write Buffer? By default, CUBRID stores data on disk through Double Write Buffer. Double Write Buffer is a buffer area composed of both memory and disk. By default, t...
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