ORM (Object-Relational Mapping) middleware is a tool used to simplify database access and operations, while SQL Alchemy is a popular Python ORM framework. It allows developers to represent database tables and records through Python objects instead of using the SQL query language directly. SQLALCHEMY provides a flexible and powerful way to manage database operations, while allowing developers to use SQL statements directly for more advanced queries.
engine:Provides a database connection pool and an execution engine for SQL.
dialects:Differences between different databases are defined, making sqlalchemy compatible with a wide range of databases.
declarative base:Allows you to define the data model declaratively.
session:Provides an abstraction of the database session.
sqlalchemy provides powerful query-building tools that allow complex database queries to be built and executed in a more pythonic way.
With regard to using SQLALCHEMY's middleware, it generally refers to some middle layer that integrates SQL ALCHEMY into a web framework or application. For example, there is Flask-SqlAlchemy middleware in Flask, and Django has its own ORM layer, but you can choose to use SqlAlchemy instead.
The benefits of using sqlalchemy middleware include:
Simplify database operations:With ORM, you can use Python objects instead of direct SQL query statements.
Database Migration:Provides support for versioning and migration of database models.
Connection Pool Management:Handle pooling of database connections to improve performance and efficiency.
Python full-stack development and automated test development class.
From shallow to deep actual combat advancement, from novice to master.
Based on Python full-stack development, it teaches automated testing skills in depth and builds comprehensive technical capabilities for students. Through systematic learning and practical projects, students will have the competitiveness to stand out in the workplace. Not only can it flexibly use python for development, but it can also ensure the quality of the project through automated testing. This is an opportunity to enhance the competitiveness of your career in an all-round way.
Basic skills and project practice necessary for python development
PVTHON Programming Language Algorithms and Data Structures Object-Oriented Programming Web Back-end Development Front-end Development Test Management Platform Project Practice.
Artificial intelligence ChatGPT in action
AI-assisted learning of various development and testing skills PyTorch Deep Learning Framework Platform Development Practice.
Data analysis and office automation
Data Acquisition Pandas & Data Processing Technology echarts & Data Visualization Technology Crawler Combat Automated Office Batch file processing.
UI automated testing with advanced project practice
Web Automated Testing App Automated Testing PageObject design pattern.
Automated testing of interfaces
Interface protocol analysis mock practice Server interface testing.
Performance testing
Performance testing process and method JMe script parameterization Grafana monitoring system construction.
Resume coaching and mock interviews
1v1 Resume Guidance, Mock Real Interview, Test Development Post Interview, Full Strategy, Famous Enterprise Private Training Service, Famous Enterprise Expert, 1v1 Counseling, Technical Guidance from Industry Experts, Targeted Solving of Work Problems, Performance Improvement Counseling and Promotion Review.
Private training services for famous companies Learn first and pay later High scholarships.
Exclusive community + evening self-study**Q&A.
5v1 all-round tutoring homework + exams to enhance the learning effect.
Resume revision, mock interview, employment referral, interview review.