Menggunakan SQLite

Dari namanya yaitu SQLite maka kita bisa menebak bahwa SQLite adalah SQL versi Lite yang berarti kecil dan kompak. Memang benar SQLlite adalah database SQL yang kecil dan praktis. SQLite hanyalah sebuah file kecil biasa tetapi dapat difungsikan sebagai database. SQLite tidak memerlukan sebuah server. SQLite cocok untuk penyimpanan data sebuah device yang smart, untuk keperluan caching. SQLite tidak cocok untuk melayani transaksi database yang kompleks. SQLite tidak boleh dibandingkan dengan database server seperti MySQL, SQLite dapat dibandingkan dengan fopen.

Berikut langkah-langkah mencoba SQLite

1. Silahkan mendownload sqlite3.exe yang ada di https://www.sqlite.org/download.html  dan letakkan di hardisk anda misalnya d:\sqlite3.exe
    
2. Membuat database seperti contoh berikut ini:
   D:\qt\dataku>d:\sqlite3.exe dbku
   SQLite version 3.8.10.2 2015-05-20 18:17:19
   Enter “.help” for usage hints.
   sqlite> create table karyawan(karyawan_id int, nama varchar(50));
   sqlite> insert into karyawan values(1, “Visia”);
   sqlite> insert into karyawan values(2, “Gracia”);
   sqlite> insert into karyawan values(3, “Victorine”);
   sqlite> select * from karyawan;
   1|Visia
   2|Gracia
   3|Victorine
   sqlite> .exit

   D:\qt\dataku>dir
    Volume in drive D is Data
    Volume Serial Number is B17C-E100

    Directory of D:\qt\dataku

   07/23/2015  12:36 PM    <DIR>          .
   07/23/2015  12:36 PM    <DIR>          ..
   07/23/2015  12:36 PM             2,048 dbku
     

3. Untuk help dari sqlite adalah seperti berikut ini:
   D:\qt\dataku>d:\sqlite3.exe dbku
   SQLite version 3.8.10.2 2015-05-20 18:17:19
   Enter “.help” for usage hints.
   sqlite> .help
   .backup ?DB? FILE      Backup DB (default “main”) to FILE
   .bail on|off           Stop after hitting an error.  Default OFF
   .binary on|off         Turn binary output on or off.  Default OFF
   .clone NEWDB           Clone data into NEWDB from the existing database
   .databases             List names and files of attached databases
   .dbinfo ?DB?           Show status information about the database
   .dump ?TABLE? …      Dump the database in an SQL text format
                            If TABLE specified, only dump tables matching
                            LIKE pattern TABLE.
   .echo on|off           Turn command echo on or off
   .eqp on|off            Enable or disable automatic EXPLAIN QUERY PLAN
   .exit                  Exit this program
   .explain ?on|off?      Turn output mode suitable for EXPLAIN on or off.
                            With no args, it turns EXPLAIN on.
   .fullschema            Show schema and the content of sqlite_stat tables
   .headers on|off        Turn display of headers on or off
   .help                  Show this message
   .import FILE TABLE     Import data from FILE into TABLE
   .indexes ?TABLE?       Show names of all indexes
                            If TABLE specified, only show indexes for tables
                            matching LIKE pattern TABLE.
   .limit ?LIMIT? ?VAL?   Display or change the value of an SQLITE_LIMIT
   .load FILE ?ENTRY?     Load an extension library
   .log FILE|off          Turn logging on or off.  FILE can be stderr/stdout
   .mode MODE ?TABLE?     Set output mode where MODE is one of:
                            ascii    Columns/rows delimited by 0x1F and 0x1E
                            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 strings
                            tabs     Tab-separated values
                            tcl      TCL list elements
   .nullvalue STRING      Use STRING in place of NULL values
   .once FILENAME         Output for the next SQL command only to FILENAME
   .open ?FILENAME?       Close existing database and reopen FILENAME
   .output ?FILENAME?     Send output to FILENAME or stdout
   .print STRING…       Print literal STRING
   .prompt MAIN CONTINUE  Replace the standard prompts
   .quit                  Exit this program
   .read FILENAME         Execute SQL in FILENAME
   .restore ?DB? FILE     Restore content of DB (default “main”) from FILE
   .save FILE             Write in-memory database into FILE
   .scanstats on|off      Turn sqlite3_stmt_scanstatus() metrics on or off
   .schema ?TABLE?        Show the CREATE statements
                            If TABLE specified, only show tables matching
                            LIKE pattern TABLE.
   .separator COL ?ROW?   Change the column separator and optionally the row
                            separator for both the output mode and .import
   .shell CMD ARGS…     Run CMD ARGS… in a system shell
   .show                  Show the current values for various settings
   .stats on|off          Turn stats on or off
   .system CMD ARGS…    Run CMD ARGS… in a system shell
   .tables ?TABLE?        List names of tables
                            If TABLE specified, only list tables matching
                            LIKE pattern TABLE.
   .timeout MS            Try opening locked tables for MS milliseconds
   .timer on|off          Turn SQL timer on or off
   .trace FILE|off        Output each SQL statement as it is run
   .vfsname ?AUX?         Print the name of the VFS stack
   .width NUM1 NUM2 …   Set column widths for “column” mode
                            Negative values right-justify
   sqlite>

Informasi lebih lanjut silahkan mengunjungi:
1. https://www.sqlite.org/.
2. https://www.sqlite.org/docs.html .

Kunjungi www.proweb.co.id untuk menambah wawasan anda.