Coursera课程《Using Databases with Python》 密歇根大学 Week3 Data Models and Relational SQL 15.4 Designing a Data Model# 主要介绍了数据模型的重要性,以及数据模型构建的一些思考过程。 15.5 Representing a Data Model in Tables# 概念模型 主键(Primary key),指的是一个列或多列的组合,其值能唯一地标识表...
SQL语言是一种数据库查询和程序设计语言,用于存取数据以及查询、更新和管理关系数据库系统。 15.2 Using Databases# Two Roles in Large Projects# Application Developer应用开发员- 创建应用的逻辑、外观和感受 - 解决应用有关的问题 Database Administrator数据库管理员- 在程序运作过程中管理和调试数据库 通常两类人...
With these under your belt, you will be able to write small but complex programs. By the end of the week, you will be able to put together a Python program that commands a small virtual robot to move in space! Python Python Programming Programming Coding Coursera Plus Course Auditing ...
Unlike the 8 puzzle, full pattern database for 15 slide puzzle is too large, I have to use additive pattern database. The most common statically partitioned additive pattern databases for 15 puzzle are 5-5-5, 6-6-3 or 7-8. Generate 5-5-5 or 6-6-3 patterns are straight forward, ...
Backend: Python/Django Database technologies: MySQL, Redis, Memcached. 9.Coursera Coursera is an online educational platform founded in 2012.As of 2020, the platform offered 3,800 courses accessed by 70 million students. Coursera is also among website examples because the Django framework provides...
We apply this study to the first dataset “100K Coursera’s Course Reviews” since it has the largest dataset and the highest number of features/contexts. Fig. 6 shows the training time along with the data size. When the proportion of training data increases from 0.2 (20% of the data) ...
It provides shorthand syntax to express functions, APIs, databases, and event source mappings. With just a few lines of configuration, you can define the application you want and model it. AWS Copilot command line interface (CLI) is a command line tool that simplifies building, releasing, and...
Coursera-Python for Everybody-Using Python to Access Web Data-DatExtracting Data With Regular Expressions #!/usr/bin/env python3 # -*- coding: utf-8 -*- __author__ = 'Jhy_Bistu' import re #hand=open('regex_sum_42.txt') hand=open('11.txt') ...
with the basics of “XML, HTML, Markdown, databases, and CSV (comma-separated values) tables, and to learn good file management techniques,” but also to learnthe programming language Pythonand putGitHubandStack Overflowto good use in composing and managing their code. Python classes for ...
Coursera课程《Using Databases with Python》 密歇根大学 Week4 Many-to-Many Relationships in SQL 15.8 Many-to-Many Relationships# 我们之前学的都是One-to-Many的关系,比如说Album与Track的关系。而我们现在要说的是Many-to-Many关系,比如说Books与Authors的关系。