As an Android app, you will inevitably deal with SQLite. With the continuous upgrading of the application, the original database structure may no longer adapt to the new features, this time, you need to upgrade the structure of the SQLite database. SQLite provides the ALTER TABLE command, which allows the user to rename or add new fields to an existing table, but cannot remove fields from the table.And you can only add fields at the end of the table,
1, the first user to determine, their own choice and purchase of the system disk is not a genuine system disk, if not genuine system disk, please win7 system users to start a genuine Win7 system disk after again select upgrade, believe that the use of genuine system disk, should not appear above the fault.
2, users in the upgrade time, but also need to consider their own computer hardware is not too old, a
Write in front:First, when we execute the upgrade script updater-script, it means that we have entered the upgrade installation state. So let's start with the actual installation as a portal. That is to say, we start with the Install_package function in install.cpp to analyze it step-by-step.Here is the main analysis of the script-related sections, others please refer to this friend's blog http://blog.china
tag: discuz HTTP Io ar file SP data Div on After the ucenter upgrade is complete on some sites, you are still prompted to upgrade the ucenter to version 1.6.0 or later. The reasons for incorrect ucenter version numbers and solutions are as follows, there may be several files and solutions:1. ucenter files are not completely uploaded, at this time you can download a ucenter Program (http://download.comsenz.c
How to upgrade the MIUI8 stable edition
MIUI8 brought the mobile phone, application double open, suspended ball, orchid Pavilion Font, long screen, pseudo base station recognition, full-featured NFC and other functions, according to the Millet, MIUI8 stable version of the installation package for 1GB, please back up before the upgrade data.
The push is also for the global 200 million MIUI users, sup
SharePoint 2010 upgrade to 2013 time to ensure that users can connect, but cannot change the upgrade dataI summarize the steps in red please note their meanings. Step 1: Connect to the content of the SharePoint 2010 database on the SQL DBS. Step 2: Set the read-only state of the SharePoint content database to True. Step 3: Restore the SharePoint 2010 content database backup files to the SharePoint 2013 farm
View Nginx Current VersionThe current version can be viewed with the nginx-v command, and some nginx commands are installed at the current version[Email protected] sbin]#./nginx-vNginx version:nginx/1.2.9Built by GCC 4.4.7 20120313 (Red Hat 4.4.7-3) (GCC)Configure arguments:--prefix=/nginx_instal1. Download the new version of Nginx 1.44, unzip, enter the directoryConfigure using the same configure as above#./configure--prefix=/nginx_instal#make2. Back up the old Nginx file, only need to backup N
Cloud-dwelling community small reminder: Use itunes upgrade in the computer iOS7 will empty your phone data, build justice everyone in the upgrade before the phone to back up the data.
1, download iOS7.1.2 corresponding mobile phone model of the latest firmware version (not recommended to use the itunes direct upgrade, because it will use itunes download firmwar
April 8, 2014, XP is gone, but Win8.1 update is coming tonight, starting early this evening, Microsoft will provide a free Win8.1 update for the global Win8.1 system, users only need to open the network, As well as turning on the Win8.1 Automatic Update feature, the following are the Win8.1 upgrade update notes and related instructions.
Win8.1 update needs to download updates for installation KB2919355, KB2919442, and so on, which are defined
Huawei P7 Mobile phone how to upgrade
The first step, turn on the mobile "settings"-"All set"-click "Mobile Upgrade" below, and then click "Software System update."
Second step, click on "Online Upgrade", select "Download and install".
The third step, finally waiting for him to download after the "System Software Update" prompt
WIN10 official version of the release, all win7/win8.1 users will receive upgrades to the push, direct free upgrades to WIN10. But how do you upgrade the WIN10 system without a licensed user? As long as you can use the normal WIN10 system by joining the Windows Insider program, the win7/8.1 Upgrade WIN10 tutorial is available below.
1, win7/win8.1 User upgrades
In fact, as long as you are using the genuin
The firmware upgrade instance of ms6000 chip with melfas describes the installation process of image files in the general array format. The chip requires a pin combination to complete a certain sequence and enable a set of command codes to enter the burning mode, in the burning mode, the I2C address is 0xfa (different from the address 0x40 when the chip works normally). After the burning, reset and start corresponding normal TP operations. The general
How can I upgrade the win10 system from 1607 to 1703 ?, Win101607 upgrade 1703
In May April this year, Windows 10 was updated on its anniversary, and the system was updated to 1703 (updated by creators ). Many innovative features have been added to this update, which can be said to be a big update of Windows 10. This experience tells you how to upgrade from the
How To Disable Windows automatic upgrade and windows automatic upgrade
Most users who use Windows will update and upgrade some Windows systems during startup or shutdown, which sometimes takes a long time on the computer and affects their work. We can turn off automatic upgrade and manually
What is brought to you today is the upgrade of the Windows Server domain environment, where Windows Server 2003 is used to upgrade to Windows Server 2012.Let us introduce you to the specific process of Windows Server domain environment upgradeFirst of all to introduce the experimental environment today: three servers, a Windows Server 2003 (SERVER04), a Windows Server (SERVER05) (here it is necessary to say
2013 may.5th Debian officially announced Wheezy officially released as the new stable release, if you don't know your Debian version, you can
To view with the following command:#cat/etc/issue View System version#uname-A To view the kernel version directly
This edition updates a lot of software, fixes some bugsNginx 1.2.1Apache 2.2.22Asterisk 1.8.13.1GIMP 2.8.2An updated version of the GNOME desktop environment 3.4GNU Compiler Collection 4.7.2Icedove (an unbranded version of Mozilla Thunderbird
IOS7.1.2 Upgrade Method Detailed:
Upgrade/Restore IOS7.1.2 method via itunes
Attention:
1, through the itunes recovery will result in the emptying of all the information on the iOS device, recommended to back up good important information.
2, has escaped Iphone/ipad/itouch using itunes upgrade/restore may report an unknown err
Windows 10 is the best and most secure Windows ever. You can easily upgrade for free. If you are a Windows 7 or 8.1 customer, be sure to complete the upgrade by July 29, 2016, since the free upgrade offer will end.
To view your status or change the upgrade schedule or notification settings, see the instructi
the Eclipse ADT bundle (ie: Android Developer kit and Eclipse Integration Pack), then since 2014/ Since the launch of Android Studio1.0 in December, the official website only provides the download of Android studio, so the Eclipse ADT bundle has never been downloaded.This article will show you the install Eclipse ADT bundle upgrade to Android 5.0.1 and install the Google Play service and how toThe activation of Android 5.0.1 Google play and the Outla
I have just started Android for more than a month. I wrote this demo test because the company needs to submit technical documents. I want to save it for later use! If anything is wrong, please let us know. This example is based on others' demos on the Internet.
Upgrade of Android applications (self-Upgrade)
I. Introduction:
Many Android applications have Version Detection and automatic update functions. You
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