sqlite tutorial ios

SQLite in iOS is exactly the same as in Android, except that the calling method is different. If a single call from the Android package is better than a set of helper, and iOS native C language of several functions in operation, more trouble. However, the introduction of third-party framework Fmdb, the use of more convenient.First, the basic use of SQLiteSteps to

In iOS, FMDB third-party SQLite database UI_20 1. What is FMDB? FMDB is an SQLite database on iOS platform, but it encapsulates SQLite statements in C language in the OC mode and is more object-oriented. 2. advantages of FMDB: 1. it is more object-oriented. 2. compared with

Sqlite and iossqlite for Ios development Sqlite is an important means of ios data storage. Today, let's take a look at how to use sqlite to store data in the sandbox. 　　Step 1: import a framework libsqlite3.0.dylib Select TARGETS and click '+' in the Linked Frameworks and Li

iOS Development-ui Learning-sqlite Database operationsSQLite is a lightweight database, it occupies a very low resource, in the embedded device, may only need hundreds of K of memory is enough, and it processing speed than the MySQL, PostgreSQL the two famous database is faster, Used in iOS and Android apps to perform offline caching of data, such as offline cach

Case study of adding, deleting, modifying, and querying IOS Sqlite user interface1. case Description: The SQLite operation is encapsulated to convert the operation on the data table into an object, and the user table is added, deleted, modified, and queried through the UI, shows.2. project directoryThe UserModel class is the user object model and corresponds to t

C language for iOS sqlite I took a look at sqlite knowledge on Saturday and recorded it here. A video of Chuanzhi podcast The data operation is basically adding, deleting, modifying, and querying: Static sqlite3 * db; // declare a Database @ implementation XSDBOperator + (void) initialize {NSString * filename = [[declare (NSDocumentDirectory, NSUserDomainMask, Y

Usually, when you clear the table, you also need to reset the self-increment column to zero. Here's how to define a self-increment column in SQLite: 1 CREATE TABLE TableName (id INTEGER PRIMARY KEY autoincrement, ...); A table named Sqlite_sequence is automatically created when the SQLite database contains a self-increment column. This table consists of two columns: name and

I took notes after reading instructor Xiao Bu's "SQLite Quick Start video tutorial ". Lecture 1 What is SQLite?Why?How to get it? How to install?How to manage it?How to Use Perl to access SQLite data;How to use C or C ++;SQL features not supported by SQLite; Self-contained

The database in the previous blog in the "SQLite C Language Interface Specification (iii)--BINDING values to Prepared statements" used to remove the result value from the query results. Today's blog on the detailed introduction of sqlite3_column_* () method. In the SQLite database C language interface, it takes different interface functions to remove different types of values from the query results. I. sqli

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 SQLite, the degree of preparation is greatly reduced. With fmdb, when writing a program, you only need to focus on the SQLite coding method, instead of having to hand

Andage: (int) Age Andtel: (NSString *) tel{NSString* Insert=[nsstring stringWithFormat:@"INSERT INTO T_person (Name,age,tel) VALUES ('%@ ',%d, '%@ ')", Name,age,tel]; [Self _execsql:insert andtip:@"Insert Operation"]; }/** * Perform database operations * * @param SQL to execute the SQL * @param tip to perform the action title*/- (void) _execsql: (NSString *) SQL Andtip: (NSString *) tip{Char*result; if(Sqlite_ok==sqlite3_exec (SQLITE, SQL. Utf8string

data into the model and store it in an array- - Don't forget to release the statement object at the end //Find a student+ (Student *) Findstudentbyid: (int) id{//Open DatabaseSqlite3 *db =[DB Open]; Sqlite3_stmt*STMT =Nil; Student*student =Nil; intresult = SQLITE3_PREPARE_V2 (db,"SELECT * from Students where ID =?", -1, stmt, nil); if(Result = =SQLITE_OK) { //if a query statement or other SQL statement is conditional, inside the function that prepares the statement object, SQL uses t

resulting value will be the converted result. 4. The type int sqlite3_column_type (sqlite3_stmt*, int icol) that gets the data for a column in the data row; The return value: Sqlite_integer,sqlite_float,sqlite_text, Sqlite_blob,sqlite_null uses a method similar to the SQLITE3_COLUMN_XXX () function. There are many application programs on the Mac that can be used to produce it, and the UI interface is convenient. However, if you do not want to install the software separately, the MAC system also

NIB.Create a new project, use CoreData, after the emulator runs, the program corresponding to the document directory appears a coredata.sqlite, you can use the Sqlite3 command to view the structure of the table insideNspersistentstorecoordinatorThe object of this class is initialized with Nspersistentstorecoordinator object, there are some methods to add, delete NsmanagedobjectNsfetchrequestYou typically use nsentitydescription to construct a query, you specify the query for that table, and you

, NSString *error) {NSLog (@ "%@", dataList); } Andobjects:nil]; }//Modify table statement-(void) altertable {nsstring *sql = @ "ALTER TABLE teacher add column pwd integer"; if ([Qysqlitemanager Altertablewithsqlstring:sql]) {NSLog (@ "modified successfully"); }//Update data statement-(void) updatetable {nsstring *sql = @ "Update teacher set name =? where id =?"; if ([Qysqlitemanager updatetablewithsqlstring:sql andarray:@[@ "Xiaoming", @115]]) {NSLog (@ "update succeeded"); } } For the

One, simple explanation 1. What is Fmdb Fmdb is the SQLite database framework for iOS platform Fmdb encapsulates the C language API of SQLite in OC mode The advantages of 2.FMDB Use more object-oriented, save a lot of trouble, redundant C language code Compare the core data frame with Apple's own, lighter and more flexible Provides a multi-threaded and sec

iOS Development database Chapter-sqlite Common functionsA simple explanation1. Open the Databaseint Sqlite3_open (const char *filename,//file path for databaseSqlite3 **ppdb//DB instance);2. Execute any SQL statementint Sqlite3_exec (sqlite3*,//an open DB instanceconst char *sql,//SQL statement to executeInt (*callback) (void*,int,char**,char**),//callback after the SQL statement is executedvoid *,//The 1th

iOS database SQLite and the use of Meassqlite software 1. Introduction to the DatabaseRequirements: Use a database to maintain a high volume of complex data when you need to keep a traffic testCommon Database(1) Microsoft SQL Server 2000/2008 is a relational database management system introduced by Microsoft Microsoft(2) Oracle more complex enterprise use more(3) MYSQI website use more(4)

IOS learning notes 0C-SQLite data storage, iossqlite storage pictures 1. Import the libsqlite3.0.dylib framework to the Project 2. Import # Impourt 3. We recommend that you use the sqlite Manager management software on your local computer. The code below //// ViewController. m // SQLiteDemo /// Created by wangtouwang on 15/4/9. // Copyright (c) 2015 wangtouwang.

SQLite Embedded Database benefits:1. Embedded database2. Support events, no configuration required, no installation required, no administrator required3. Support for most SQL92 standards4. The complete database is saved in a file above the disk, the same database file can be used on different machines, the maximum support database to 2T5. The entire system less than 30,000 lines, less than 250KB of memory consumptionStart using