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免费 - 解密PGSQL数据库引擎PGSQL是PostgreSQL数据库的一种数据库引擎。PostgreSQL最早由加拿大蒙特利尔大学计算机科学系的Michael Stonebraker教授和其学生在1986年开始开发,最早的版本称为POSTGRES(加拿大大学学术信息管理系统)。POSTGRES是一个基于Ingres数据库系统的研究项目,旨在提供更好的数据完整性和更好的支持复杂类型的数据。 在1994年,POSTGRES被重新命名为PostgreSQL(后来缩写为PG)并发布为开源软件。自此以后,PostgreSQL的发展进入了一个快速的阶段,吸引了全球许多开发者的加入。 随着时间的推移,PGSQL的功能和性能不断得到提升。它的开发团队持续致力于改进数据库的各个方面,包括事务处理、并发性、数据完整性和安全性等。 PGSQL引擎的独特之处在于其支持复杂数据类型,如数组、JSON、XML等。它还提供了许多高级功能,如全文搜索、地理信息系统(GIS)支持和高级的查询优化器。此外,PGSQL还具有高度的可扩展性,允许用户通过编写自定义插件和扩展来满足特定的需求。 PGSQL已
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免费 - PostgreSQL-Up-and-Running-A-Practical-Guide-to-the-Advanced-Open-Source-DatabasePostgreSQL-Up-and-Running-A-Practical-Guide-to-the-Advanced-Open-Source-Database,数据库课本 如题所示 全本pdf版本
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免费 - PostgreSQL_Notes_For_ProfessionalsThis PostgreSQL® Notes for Professionals book is compiled from Stack Overflow Documentation, the content is written by the beautiful people at Stack Overflow. Text content is released under Creative Commons BY-SA, see credits at the end of this book whom contributed to the various chapters. Images may be copyright of their respective owners unless otherwise specified This is an unofficial free book created for educational purposes and is not affiliated with official PostgreSQL® group(s) or company(s) nor Stack Overflow. All trademarks and registered trademarks are the property of their respective company owners
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免费 - postgresql-9.6 manualpostgresql-9.6 英文说明文档,官方下载,内容具体详细
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免费 - SQL Primer: An Accelerated Introduction to SQL Basics-Rahul BatraBuild a core level of competency in SQL so you can recognize the parts of queries and write simple SQL statements. SQL knowledge is essential for anyone involved in programming, data science, and data management. This book covers features of SQL that are standardized and common across most database vendors. You will gain a base of knowledge that will prepare you to go deeper into the specifics of any database product you might encounter. Examples in the book are worked in PostgreSQL and SQLite, but the bulk of the examples are platform agnostic and will work on any database platform supporting SQL. Early in the book you learn about table design, the importance of keys as row identifiers, and essential query operations. You then move into more advanced topics such as grouping and summarizing, creating calculated fields, joining data from multiple tables when it makes business sense to do so, and more. Throughout the book, you are exposed to a set-based approach to the language and are provided a good grounding in subtle but important topics such as the effects of null value on query results. With the explosion of data science, SQL has regained its prominence as a top skill to have for technologists and decision makers worldwide. SQL Primer will guide you from the very basics of SQL through to the mainstream features you need to have a solid, working knowledge of this important, data-oriented language.
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免费 - GPDBAGuide.pdfGreenplum Database is a massively parallel processing (MPP) database server based on PostgreSQL open-source technology. MPP (also known as a shared nothing architecture) refers to systems with two or more processors that cooperate to carry out an operation - each processor with its own memory, operating system and disks. Greenplum uses this high-performance system architecture to distribute the load of multi-terabyte data warehouses, and can use all of a system’s resources in parallel to process a query. Greenplum Database is essentially several PostgreSQL database instances acting together as one cohesive database management system (DBMS). It is based on PostgreSQL 8.2.15, and in most cases is very similar to PostgreSQL with regard to SQL support, features, configuration options, and end-user functionality. Database users interact with Greenplum Database as they would a regular PostgreSQL DBMS.
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免费 - Beginning PostgreSQL on the Cloud-Apress(2018).pdfGone are the days where we had to use our own data centers to create our database infrastructure. We have seen a lot of progress in the cloud computing arena. We can now peacefully deploy our databases or applications on the cloud and avoid the cost and pain of managing the infrastructure. Likewise, most organizations have special projects in place to migrate their proprietary license databases to Open Source databases like PostgreSQL. Most such organizations consider it the right time to migrate to a PostgreSQL database deployed on the cloud, because doing so can save them money and effort. Thus, we knew it was time to write a book that helps users understand the advantages and limitations of all the existing cloud vendors available for deploying PostgreSQL on their platforms. This book contains the details about the major vendors available to deploy a PostgreSQL database on the cloud. It starts with an introduction to DBaaS and IaaS and a brief description of the criteria considered by organizations when deploying databases as a service. We talk about the major concerns and issues you might come across while deploying databases on the cloud. We included steps and procedures involved in migrating from on-premise to the cloud. As this book is mainly written to address the process of deploying a PostgreSQL database on the cloud, we include a detailed architecture of PostgreSQL in one of the chapters. The architecture of PostgreSQL should help you understand most of the parameters that are needed to better tune your PostgreSQL environment.
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免费 - Packt.PostgreSQL.Development.EssentialsThe purpose of this book is to teach you the fundamental practices and techniques of database developers for programming database applications with PostgreSQL. It is targeted to database developers using PostgreSQL who have basic experience developing database applications with the system, but want a deeper understanding of how to implement programmatic functions with PostgreSQL.
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