* SQLite3
: http://developer.apple.com에서 sqlite로 검색
==>sqlite3(1) Mac OS X Manual Page 참조.
: 아이폰에 내장된 SQL데이터베이스 이다.
: 객체를 사용해 처리하는것보다 빠르다.
: NSString 객체를 사용할 수 없다.
( 일반적인 C 언어로 구현되어 있다. )
char *stringPath = [pathString UTF8String]; 이용한다.
: www.sqlite.org 참조. ( 매우 중요 )
* 간단한 실습
*******NAME*******
sqlite3 - A command line interface for SQLite version 3
*******SYNOPSIS*******
sqlite3 [options] [databasefile] [SQL]
*******SUMMARY*******
sqlite3 is a terminal-based front-end to the SQLite library that can evaluate queries interactively
and display the results in multiple formats. sqlite3 can also be used within shell scripts and other
applications to provide batch processing features.
*******DESCRIPTION********
To start a sqlite3 interactive session, invoke the sqlite3 command and optionally provide the name of
a database file. If the database file does not exist, it will be created. If the database file does
exist, it will be opened.
For example, to create a new database file named "mydata.db", create a table named "memos" and insert
a couple of records into that table:
$ sqlite3 mydata.db
SQLite version 3.1.3
Enter ".help" for instructions
sqlite> create table memos(text, priority INTEGER);
sqlite> insert into memos values('deliver project description', 10);
sqlite> insert into memos values('lunch with Christine', 100);
sqlite> select * from memos;
deliver project description|10
lunch with Christine|100
sqlite>
*****SQLITE META-COMMANDS*********
The interactive interpreter offers a set of meta-commands that can be used to control the output for-mat, format,
mat, examine the currently attached database files, or perform administrative operations upon the
attached databases (such as rebuilding indices). Meta-commands are always prefixed with a dot (.).
A list of available meta-commands can be viewed at any time by issuing the '.help' command. For
example:
sqlite> .help
.databases List names and files of attached databases
.dump ?TABLE? ... Dump the database in an SQL text format
.echo ON|OFF Turn command echo on or off
.exit Exit this program
.explain ON|OFF Turn output mode suitable for EXPLAIN on or off.
.header(s) ON|OFF Turn display of headers on or off
.help Show this message
.import FILE TABLE Import data from FILE into TABLE
.indices TABLE Show names of all indices on TABLE
.mode MODE ?TABLE? Set output mode where MODE is one of:
csv Comma-separated values
column Left-aligned columns. (See .width)
html HTML <table> code
insert SQL insert statements for TABLE
line One value per line
list Values delimited by .separator string
tabs Tab-separated values
tcl TCL list elements
.nullvalue STRING Print STRING in place of NULL values
.output FILENAME Send output to FILENAME
.output stdout Send output to the screen
.prompt MAIN CONTINUE Replace the standard prompts
.quit Exit this program
.read FILENAME Execute SQL in FILENAME
.schema ?TABLE? Show the CREATE statements
.separator STRING Change separator used by output mode and .import
.show Show the current values for various settings
.tables ?PATTERN? List names of tables matching a LIKE pattern
.timeout MS Try opening locked tables for MS milliseconds
.width NUM NUM ... Set column widths for "column" mode
sqlite>
