关系型数据库简介 Introduction to Relational Databases - 达拉那大学学院 - 瑞典共计15条视频,包括:Lec 01 Database Basic concepts、Lec 02 Database Quality、Lec 03 Database Database components等,UP主更多精彩视频,请关注UP账号。
SQL 关系数据库入门 - Introduction to Relational Databases in SQL 2023-11共计6条视频,包括:ch1_1_ok、ch1_2_ok、ch1_3_ok等,UP主更多精彩视频,请关注UP账号。
Introduction to Relational Databases: Database Design Issues
本文是对文章 Introduction to Databses 的翻译,原作者是 Dixon Kiamani。文章简单介绍了什么是数据库、数据库简史、什么是关系型数据库、数据库的一些基本概念、不同种类的数据库,以及一些商业关系型数据库。如果你和我一样从来没有学过数据库,那么本文应该是个不错的开始。 原文最后更新于 2020 年 11 月 20 ...
B - Learning Rails An Incredibly Brief Introduction to Relational Databases: Appendix B - Learning RailsAn Incredibly Brief Introduction to Relational Databases: Appendix B - Learning RailsEdd DumbillSimon St. Laurent
This module provides an introduction to relational databases, the SQL language and Transact-SQL. You'll learn what kinds of statements make up the SQL language and look at the SELECT statement in detail. Learning objectives After completing this module, you'll be able to: ...
This document provides a simple introduction to the representation of relationships in object models and relational databases, including how EF Core maps between the two. Relationships in object models A relationship defines how two entities relate to each other. For example, when modeling posts in ...
Relational databases Before learning the SQL syntax, it's important to have a model for what a relational database actually is. A relational database represents a collection of related (two-dimensional) tables. Each of the tables are similar to an Excel spreadsheet, with a fixed number of nam...
The personal details that you supply, such as name, address, age, and whether you drink or smoke, are used by the database system to determine the cost of the insurance. An insurance agent can search several databases to find the organization that gives you best deal. Renting a DVD (租...
SQL is the ANSI standard language for relational databases. All operations on the data in an Oracle database are performed using SQL statements. For example, you use SQL to create tables and query and modify data in tables. A SQL statement can be thought of as a very simple, but powerful...