sqlite tutorial ios

SQLite tutorial (5): Index and data analysis/cleanup, sqlite Data Analysis I. Create an index: In SQLite, the SQL syntax for index creation is basically the same as that of most other relational databases, because here is just an example usage:Copy codeThe Code is as follows:Sqlite> create table testtable (first_col in

Characteristics of the database: Stored together in a certain way Can be shared for multiple users With as few redundant code as possible Datasets that are independent of each other from the program Sqlite SQLite is a lightweight relational database, originally designed to be used in embedded systems, and it consumes very little resources. In

SQLite tutorial (6): expression explanation, sqlite expression I. common expressions: Like most relational databases, SQLite can well support expressions provided in the SQL standard, and its functions are consistent with the SQL standard, such:Copy codeThe Code is as follows:|*/%+-===! = ANDOR~ NOTIn the above express

PHP SQLite instance tutorial. This tutorial will introduce you to the important methods supported by SQLiteAPI and provide a simple script template that can be used in your development, this document describes how to use PHP to interact with the SQLite database. This document describes the important methods supported b

SQLite tutorial (13): C language programming example code (1), sqlite programming example 1. Get the table Schema information: 1) dynamically create a table. 2) obtain the table field information, such as the number of fields and the type of each field, based on the API provided by sqlite3. 3). Delete the table. See the following code and key notes:Copy codeThe C

Comparison of iOS databases: SQLite vs. Core Data vs. Realm If you want to develop a great application that can quickly run without bugs, you must carefully consider all aspects of your application. There is one thing you must solve: how to store and query big data, then you are likely to use the database. In most cases, the IOS database selects

iOS Development Database Chapter-sqlite Brief Introduction One, offline caching In project development, it is usually necessary to process the data off-line, such as off-line caching of news data.Note: Offline caching is generally to save data to the project's sandbox. There are several ways to do this(1) Archiving: nscodeing, Nskeyedarchiver(2) Preferences: Nsuserdefaults(3) plist storage: WriteToFileTip

Original blog, reproduced please indicate the sourceBlog.csdn.net/hello_hwcWelcome to my iOS SDK detailed columnHttp://blog.csdn.net/column/details/huangwenchen-ios-sdk.htmlObjective: CoreData is not a db, nor is it a DBMS, it is an object graph management tool, and its underlying storage uses sqlite,xml or something else. Third-party libraries, such as

The iOS system comes with Core Data persistence, and Core Data can use a graphical interface to create objects, but Core Data not relational databases, and is Core Data better at managing data persisted on devices created by user-created objects. However, in order to process large amounts of data, it is preferable to choose SQL relational databases to store the data.Core DataSQLite is also used to store data in the background, but developers cannot ac

introductionHow data is stored in 1.ios(1) Plist (nsarray\nsdictionary)(2) Preference (preference setting \nsuserdefaults)(3) nscoding (Nskeyedarchiver\nskeyedunarchiver)(4) SQLite3(5) Core DataDescription3 is the version number, which is the third version of SQLite. Core data is a package for SQLite because the SQLite