Android database master's secret (0) -- Preface, android Preface

Android database master's secret (0) -- Preface, android Preface

Reprinted please indicate the source: http://blog.csdn.net/guolin_blog/article/details/38083103

I couldn't even believe it when I first started to access Android. The Android system was built into a database! Well, I am too ignorant. Since I used to switch from the Web, I also had a special preference for database technologies. I was pleasantly surprised when I knew the news. The built-in database in Android is SQLite, and MySQL is the most commonly used database during Web development. After comparison, I found that these two databases are extremely similar and both support standard SQL syntax, it also follows ACID transactions in the database, so as long as you have used other relational databases before, you can quickly get started with SQLite.

However, I believe there are still many Android programmers who have not mastered database programming very well, or are still in a relatively simple use stage, this is mainly because our client programmers have much less access to the database than the server programmers. However, it is still crucial for an Android programmer to have a good grasp of the usage skills in all aspects of the database. Therefore, I am going to write a column titled "experts in Android databases" here, this is the first article in this column.

The content in this column is mainly about advanced technologies. This includes some unknown usage skills in the Android database and comprehensive analysis.LitePalAll usage of this Android database framework. At the same time, in order to consider the reading of beginners, some basic knowledge will be involved in the explanation. The overall content is still difficult to combine and is suitable for gradual learning.

So let's not talk much about it. We will immediately enter the first article in this column.Secret of Android database experts (1) -- SQLite command.

Android

The core library is used to provide android applications with most basic Java language functions, such as basic data structures, mathematics, I/O, tools, databases, and networks. Most of these implementations come from the ApacheHarmony project. The specific implementation of the core library is in the libcore directory, and the Java part is eventually packaged as the core. after installation, the jar package will be placed in the system \ framework \ directory of the target file system. When the desktop is started, it will first be loaded as a basic package of the Java program.

How can I see the data in the Android database?

There is a File Explorer in DDMS.