PostgreSQL 10.1 手册

PostgreSQL 是以加州大学伯克利分校计算机系开发的POSTGRES， 版本 4.2 1 为基础的对象关系 型数据库管理系统（ORDBMS）。POSTGRES 领先的许多概念在很久以后才出现在一些商业数据 库系统中

postgresql tutorial

PostgreSQL is a powerful, open source object-relational database system. It has more than 15 years of active development and a proven architecture that has earned it a strong reputation for reliability, data integrity, and correctness. PostgreSQL runs on all major operating systems, including Linux, UNIX (AIX, BSD, HP-UX, SGI IRIX, Mac OS X, Solaris, Tru64), and Windows. This tutorial will give you quick start with PostgreSQL and make you comfortable with PostgreSQL programming.

Stanford 机器学习 笔记

Supervised learning Let’s start by talking about a few examples of supervised learning problems. Suppose we have a dataset giving the living areas and prices of 47 houses from Portland, Oregon: Linear Regression To make our housing example more interesting, let’s consider a slightly richer dataset in which we also know the number of bedrooms in each house

odoo12开发手册第四版

Odoo 12 Development Essentials Fourth Edition When I joined Odoo (a long time ago!), my first challenge was to deliver training courses for consultants, including technical sessions for new Odoo developers. Daniel's Odoo Development Essentials is the realization of my wishes from these sessions; the companion book I wish I could have given to the participants to kick-start their first contact with Odoo. Chapter after chapter, he walks you through the creation of your first Odoo app, following best practices at every step. Starting with a solid development environment, you'll soon feel comfortable with your Odoo system, and quickly shape up a typical app. From the model groundwork upwards, you'll learn about each framework layer, including the latest frontend features and the RPC API. In this cloud era, integration is key, and Odoo features a very comprehensive API, opening up endless integration options.