I. Introduction to SQLite
On the Android platform, an embedded relational database named SQLite and sqlite3 is integrated.SupportedNull, integer, real (floating point number), text (string text), blob (binary object) data type,Although it
Development experience.
The first is to obtain images from the network and read the images from the network in the form of nsdata to the localCodeIt's easy. There are only two sentences.
Nsstring * url = @ "http://www.163.com/a.jpg"; nsdata *
Fmdatabase -- objective-C encapsulation of SQLiteIt is SQLite's c API that is too messy and fragmented for beginners. Fmdb said that, in fact, it only converts the c api package into a simple and easy-to-use objective-C class. For beginners of
This article Reprinted from http://www.tntserver.cn/article.asp? Id = 41
I encountered a problem today.First, insert a data in datatime format:String SQL = "insert into [Table] (date_time) values ('" +Date_time.tostring ()+ "'";Execute the
First, I developed QT. I mounted a virtual machine through a board and then accessed the shared directory between the PC and the virtual machine through the smb service. It is really good to use databases to do projects in the past few days. Of
2. Use the SQLite database on WinCE:1. Environment: evc4 + SP41 ).Http://sqlite-wince.sourceforge.net/Download the source code of SQLite for Windows CE.2) create a "wce dynamic-Link Library" project in EVC and name it SQLite.3) in the following
Recently, due to the needs of the project, it is necessary to improve the data warehouse receiving performance in the project. Through optimization, it is found that the warehouse receiving method is different, and the efficiency is really quite
The following is my working directory, which can be adjusted according to your own situation.
1. Cross-compiling environment establishment: used for cross-compiling SQLite
Install cross-2.95.3.tar.bz2 to the/usr/local/ARM directory.
Unzip the sqlite-
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As we all know, databases are very important.
Written in front of, this article Reprinted from http://www.eoeandroid.com/thread-81911-1-1.html
Package it. service; import Java. util. arraylist; import Java. util. list; import android. content. context; import android. database. cursor; import
Before using C ++ to operate SQLite, You need to obtain sqlite3.h, sqlite3.lib, and sqlite3.dll.
HereDownload. And import the three files into the VC ++ project. Put the sqlite3.dll file in the debug folder. SQLite API introduction int sqlite3_open (
1. How to create an auto-increment field?
2. What data types does SQLite support?
3. Why can I insert a string into the integer field of the SQLite database?
4. Why does SQLite think the expression '0' = '00' is true?
5. Why does SQLite not allow '0'
Vista or later systems must have System Administrator privileges to execute the following code. Sqlite.net uses 1.0.66.0, supports the ado.net EF data model,: http://sourceforge.net/projects/sqlite-dotnet2/files/SQLite%20for%20ADO.NET%202.0/
During
As a lightweight embedded database, SQLite is still very useful. Rain marks are highly recommended ~~~~~~
Today, a friend tested SQLite and concluded that the efficiency of SQLite was too low. It took 2 minutes to insert 1000 records in
In this article, you can search and view the Help File of sqlite.net over the Internet, and find two ways to create a new SQLite database. If you have other better solutions, please let me know.1. Use System. Io to create a new file.Public void
1. Download sqlite
SQLite can go to the official site to download http://www.sqlite.org/download.html
Use sqlite in VCTo download sqlitedll-3_7_2.zipand sqlite-amalgamation-3_7_2.zip
Ii. compilation process
After the dll package is decompressed,
In the past two days, another Data Conversion Program will explain how to convert the data originally stored in binary format to the SQLite database. The total number of records is more than 10 million. The development uses the. net framework 3.5 sp1
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