Database Systems

Cassandra 1.0 provides data compression based on columnfamily, which is also a function of the people's voice. Compression can effectively reduce the volume of data, but also reduce disk I/O, especially for those who read many of the scenarios. What are the benefits of compression compression can effectively reduce the volume of data, you can store more data on the same memory and disk. In addition, by decompressing only the data blocks of the specified portion, Cassandra also improves the performance of reading data from disk. Unlike traditional database systems ...

Cloveretl is a Java based http://www.aliyun.com/zixun/aggregation/13607.html "> Data integration and Data Transformation framework." It is composed of individual nodes/components that are simple to operate (or complicate) the data. With data flow, any transformation can be defined as a set of interrelated nodes. Cloveretl can be used as a stand-alone application or embedded package. CLOVERETL supports most mainstream database systems, it is a ...

Either in the pitiful free database space or large e-commerce sites, reasonable design table structure, make full use of space is very necessary. This requires that we have a full understanding of the commonly used MySQL data types for database systems. Now I will write down my little experience to share with you. The numeric type of the MySQL data type The numeric type is divided into three categories according to my classification: integer classes, decimal classes, and numeric classes. My so-called "digital class" refers to DECIMAL and NUMERIC, which are the same type. It is strictly speaking not ...

FluxBB is a fast, lightweight PHP architecture for the web forum system, issued under the GPL protocol. FLUXBB's mission is to become faster, smaller and less graphic than other forum systems, with fewer features and more streamlined code. Most "no" features can be implemented by plug-ins when needed. The FLUXBB page is fully compliant with XHTML and CSS standards. At present, FLUXBB can operate under various operating systems and support database systems such as MySQL, PostgreSQL, SQLite, etc. FluxBB in 20 ...

phpMyFAQ is a complete multilingual database-driven FAQ system, using phphttp://www.aliyun.com/zixun/aggregation/7332.html "> Technology development." Its function is: support a variety of database systems, similar to Baidu know, provides a WYSIWYG editor content management function, image management, support flexible multi-user, news system, user tracking, language module, template, PDF support, backup system, support active D ...

phpMyFAQ is a complete multilingual database-driven FAQ system, using phphttp://www.aliyun.com/zixun/aggregation/7332.html "> Technology development." Its function is: support a variety of database systems, similar to Baidu know, provides a WYSIWYG editor content management function, image management, support flexible multi-user, news system, user tracking, language module, template, PDF support, backup system, support active D ...

Basex is a lightweight, high-performance, extensible XML Database system and Xpath/xquery processor. It supports the update and expansion of the full-text, interactive and user-friendly GUI front-end that gives you great insight into large XML data instances. Used to store condensed XML data, provides efficient XPath and XQuery implementations, and includes a front-end operating interface. Basex 7.1.1 is listed in the New Package dialog box in this version of the GUI and has been installed to remove the XQuery package. "New ...

Basex is a lightweight, high-performance, extensible XML Database system and Xpath/xquery processor. It supports the update and expansion of the full-text, interactive and user-friendly GUI front-end that gives you great insight into large XML data instances. Used to store condensed XML data, provides efficient XPath and XQuery implementations, and includes a front-end operating interface. &http://www.aliyun.com/zixun/aggregation/37954.ht ...

phpMyFAQ 2.7.0-RC This version adds the delete user generated search terms and updates Japanese and Spanish translations. phpMyFAQ is a multilingual and complete database-driven FAQ system, using phphttp://www.aliyun.com/zixun/aggregation/7332.html "> Technology development." Its function is: support a variety of database systems, similar to Baidu know, provides a WYSIWYG editor content management function, image management, ...

Basex is a lightweight, high-performance and extensible XML Database system and Xpath/xquery processor. Ability to support the updating and expansion of the full text of the consortium. Interactive and user-friendly GUI front-end allows you to go into large XML data instances with great inspiration. Used to store condensed XML data, provides efficient XPath and XQuery implementations, and includes a front-end operating interface. Basex 6.7.1 Update:-Added to add, delete, rename, replace files, and optimize the database for XQuery ...

Evaluation of NoSQL Database in virtualized environment section Tiger-li Li gang Ruhan Chen to efficiently store and process massive amounts of data, you need to deploy NoSQL database systems on a virtualized datacenter. In view of the problem that NoSQL database is based on open source and wide variety, the paper adopts the YCSB test framework, Three sets of tests were performed on two NoSQL database system performance deployed on a virtualized platform built by VMware products. The experimental results reflect that the two kinds of NoSQL databases are in different reading and writing scenes, not ...

Michael Stonebraker is a pioneer in the field of databases. His deep expertise has also helped to develop some of the most popular database systems such as Postgres, Ingres and Vertica. One of his most recent studies is VoltDB, a memory-based OLTP (Online Transaction Processing) system, which he claims is two orders of magnitude faster than traditional solutions. However, Stonebraker's opinion has been controversial over the years, on the one hand being ...

SQL is the standard computer language used to access and process databases. What is SQL? SQL refers to Structured Query language SQL gives us the ability to access database SQL is an ANSI standard computer language editor Note: ANSI, United States national standardization Organization SQL What can you do? SQL database-oriented query SQL can retrieve data from a database SQL can insert new records in a database SQL updatable database can be deleted from the database SQL to delete records SQL can create New ...

Cego is a database system that uses object-oriented software design to implement relational and transactional databases. It uses all the common programming interfaces (C + +, C + +, DBD, Java) to support SQL query requests. The system architecture is based on POSIX multithreading, designed for high-end performance and availability. P Cego The current version contains the most common database functions for basic table operations and data retrieval. It also supports indexes, foreign keys, views and stored procedures, and so on. Later versions will support the concept of Multi-node databases and automated database applications ...

phpMyFAQ is a multilingual and complete database-driven FAQ system, using phphttp://www.aliyun.com/zixun/aggregation/7332.html "> Technology development." Its function is: support a variety of database systems, similar to Baidu know, provides a WYSIWYG editor content management function, image management, support flexible multi-user, news system, user tracking, language module, template, PDF support, backup system, support active Di ...

Research on the privacy protection of document-oriented database based on SaaS the Kang Jin of Shandong University This paper first proposes a document-oriented database privacy protection architecture, which, on the basis of the original SaaS architecture, creates a new SaaS service deployment architecture by adding a privacy layer between the application layer and the storage layer. This architecture decoupling the privacy protection system from the SaaS application system. In this architecture, the privacy protection system is transparent to both SaaS applications and database systems. Then, this paper introduces the basic method of privacy protection based on the face document database, in order to adapt ...

A review of green database for energy-aware Kim Pek Baoping Kim Yu Lihua with the global low carbonization trend and the data-centric computing trend, it has become a common concern of government, enterprises and academia to study the green Database system of energy saving. However, the existing database systems and algorithms are mostly targeted to target and design, lack of energy consumption awareness and processing, including energy efficiency and energy consumption, such as year-on-year considerations. Around the development demand of green database system, the key problems in green database technology are discussed, and the emphases are expounded ...

Part III: Log and real-time streaming processing so far, I just describe the ideal mechanism for data replication from End-to-end. But handling bytes in the storage system is not all about what you want to tell. Finally we found that the log is another way of saying that the log is the core of the stream processing. But wait, what is flow processing? If you're a fan of database culture or data infrastructure products in the late 90 or early 21st century, you might be able to relate streaming to building SQL engines or creating "box and Arrow" interfaces for event-driven processing. If you...

Oracle acquired Sun in 09, which is essential for gaining control of MySQL, the hottest open source DBMS. However, the takeover does not seem to have fully achieved Oracle's goal: as early as 08 after MySQL was acquired by Sun, MySQL Kibaki (some founder and top engineers) left MySQL and set up a new company Skysql, and after Sun was acquired by Oracle, A group of senior executives also went out to create the Monty program Ab (MARIADB's parent company). Yes...