Synchronized saving of FreeSql navigation properties

Write before FreeSql supports.net framework 4.5+,.net core 2.1+, open source ORM under a.net platform.With over 3100+, unit testing is attracting new developers and continuing to evolve. Like EFCore, we have navigation objects that support OneToOne (one-to-one), [ManyToOne], [OneToMany], [ParentChild], [ManyToMany], either by convention or by h ...

Posted on Sun, 29 Sep 2019 19:03:26 -0700 by cedricm

Thread Safety in CoreData and SQLLite Multithread Access

Links to the original text: http://www.cnblogs.com/devinzhang/p/4699196.html Thread Safety in CoreData and SQLLite Multithread Access Database read operations are generally multi-threaded access. When reading data, we must ensure that i ...

Posted on Fri, 19 Jul 2019 20:56:47 -0700 by Jaquio

Build a website with Flask from scratch (2)

Build a website with Flask from scratch (1) This paper describes how to build a Python environment and the basic project structure of Flask application.The website we are building is a third-party integrated console, similar to Slack .This article focuses on how data flows in Flask applications, and the other frameworks are basically the same. ...

Posted on Wed, 10 Jul 2019 11:15:34 -0700 by richtux

How iOS reads. db files

In the process of doing a project, we often encounter some large and fixed data processing, such as car brand, model, series, or regional list. These data have a common feature, that is, data will not change much basically, and the amount of data is relatively large, if from the request for service. Apparatus, will be very slow, performance is ...

Posted on Sat, 06 Jul 2019 13:00:41 -0700 by Phirus

Simple Encapsulation of FMDB for iOS Data Persistence

Reason FMDB is a powerful tool for iOS platform to handle data persistence. It can help developers process data efficiently on the client side, but it is not simple enough for junior developers like me. Therefore, it is necessary to encapsulate it so as to make it easier to use. The encapsulation method varies from person to person, and we need ...

Posted on Sun, 16 Jun 2019 15:06:47 -0700 by khenriks

flask-Nissan Website Construction-Database Operation

Introduction: I want to use python's flask framework to build a daily material website, mainly including web architecture, static pages, background system, interaction. At present, the home page has been copied, not the front end is too slow and too slow. Knowledge in this section: database operation, model table building, update database. pyth ...

Posted on Sat, 18 May 2019 02:35:07 -0700 by adamata

Android_6. Data Storage 3_SQLite Storage Creation Database

This article uses Android Studio as the development tool and Anroid 2nd Edition as the learning record of learning guide books. 6.4 SQLite data SQLite is a lightweight relational database built in Android system, which is used to store a large number of complex relational data. It has the characteristics of fast speed and less res ...

Posted on Fri, 10 May 2019 19:03:33 -0700 by lomokev

Query optimization method for Android SQLite database

The database performance optimization industry is generally less, today this article hopes to bring you some help. When we use SQLite for data storage query, we need to optimize the query. Indexes are used here. Although the amount of data on the C-side is not very large in most cases, good Index-building habits often lead to good query perform ...

Posted on Fri, 10 May 2019 18:19:58 -0700 by Defibber

Examples of Android ContentProvider

What is ContentProvider? ContentProvider (Content Provider) is one of the four components of Android. It manages data stored in Android in a structured way, encapsulates data (tables) in a relatively safe way, and provides a simple processing mechanism and a unified access interface for other programs to call.     There are five ...

Posted on Mon, 22 Apr 2019 10:45:33 -0700 by hansman

Five basic storage modes of android

File store SharedPreferences SQLite database storage ContentProvider Network storage I. File Storage Default storage path: / data/data/<PackageName>/filesFile operation mode: MODE_PRIVATE (default): Overlay, MODE_APPEND: Addition write file public void save(){ String data = "save something here"; FileOutputStream out = ...

Posted on Thu, 11 Apr 2019 09:54:30 -0700 by ffsja