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Command Line Shell For SQLite

Command Line Shell For SQLite
Small. Fast. Reliable.Choose any three. The SQLite project provides a simple command-line utility named sqlite3 (or sqlite3.exe on windows) that allows the user to manually enter and execute SQL statements against an SQLite database. Getting Started To start the sqlite3 program, just type "sqlite3" optionally followed by the name the file that holds the SQLite database. For example, to create a new SQLite database named "ex1" with a single table named "tbl1", you might do this: $ sqlite3 ex1 SQLite version 3.8.4 2014-02-11 16:24:34 Enter ".help" for usage hints. sqlite> create table tbl1(one varchar(10), two smallint); sqlite> insert into tbl1 values('hello!' You can terminate the sqlite3 program by typing your systems End-Of-File character (usually a Control-D). Make sure you type a semicolon at the end of each SQL command! sqlite> CREATE TABLE tbl2 ( ...> f1 varchar(30) primary key, ...> f2 text, ...> f3 real ...> ); sqlite> Double-click Startup On Windows Special commands to sqlite3 Related:  Interesting tech reads

11.13. sqlite3 — DB-API 2.0 interface for SQLite databases New in version 2.5. SQLite is a C library that provides a lightweight disk-based database that doesn’t require a separate server process and allows accessing the database using a nonstandard variant of the SQL query language. Some applications can use SQLite for internal data storage. The sqlite3 module was written by Gerhard Häring. To use the module, you must first create a Connection object that represents the database. import sqlite3conn = sqlite3.connect('example.db') You can also supply the special name :memory: to create a database in RAM. Once you have a Connection, you can create a Cursor object and call its execute() method to perform SQL commands: The data you’ve saved is persistent and is available in subsequent sessions: import sqlite3conn = sqlite3.connect('example.db')c = conn.cursor() Usually your SQL operations will need to use values from Python variables. Instead, use the DB-API’s parameter substitution. # Never do this -- insecure! This example uses the iterator form:

Download Page Small. Fast. Reliable.Choose any three. Build Product Names Build products are named using one of the following templates: sqlite-product-version.zip sqlite-product-version.tar.gz sqlite-product-os-cpu-version.zip sqlite-product-date.zip Templates (1) and (2) are used for source-code products. The version is encoded so that filenames sort in order of increasing version number when viewed using "ls". The date in template (4) is of the form: YYYYMMDDHHMM Source Code Repositories The SQLite source code is maintained in three geographically-dispersed self-synchronizing Fossil repositories that are available for anonymous read-only access. See the How To Compile SQLite page for additional information on how to use the raw SQLite source code. (Dallas) (Newark) (Fremont) The documentation is maintained in separate Fossil repositories located at:

12.6. sqlite3 — DB-API 2.0 interface for SQLite databases — Python 3.3.3 documentation SQLite is a C library that provides a lightweight disk-based database that doesn’t require a separate server process and allows accessing the database using a nonstandard variant of the SQL query language. Some applications can use SQLite for internal data storage. It’s also possible to prototype an application using SQLite and then port the code to a larger database such as PostgreSQL or Oracle. sqlite3 was written by Gerhard Häring and provides a SQL interface compliant with the DB-API 2.0 specification described by PEP 249. To use the module, you must first create a Connection object that represents the database. import sqlite3conn = sqlite3.connect('example.db') You can also supply the special name :memory: to create a database in RAM. Once you have a Connection, you can create a Cursor object and call its execute() method to perform SQL commands: Usually your SQL operations will need to use values from Python variables. Instead, use the DB-API’s parameter substitution. See also 12.6.1.

Detailed installation guides Any UNIX-Like Platform General Linux Debian/Ubuntu Linux Debian based installs have a somewhat unique design that allows multiple database clusters to be managed independently. RedHat/Fedora/CentOS FreeBSD MacOS Solaris Windows Running & Installing PostgreSQL On Native Windows Alternative to manual installation Some users may prefer to skip manual installation by using a pre-integrated PostgreSQL software appliance. GUI interface for sqlite data entry in Python Download PostgreSQL | EnterpriseDB NOTE: April 10, 2014: The installers for PostgreSQL 9.3.4-3, 9.2.8-3, 9.1.13-3, 9.0.17-3 and 8.4.21-3 have recently been updated to include a patch to address CVE-2014-0160, a TLS heartbeat read overrun issue in the OpenSSL library that is packaged in the installer. Please Note: Cookies should be enabled for the download process to function correctly Installer version Version 9.3.4 Installer version Version 9.2.8 Installer version Version 9.1.13 Installer version Version 9.0.17 Installer version Version 8.4.21 Installer version Version 8.3.23 (No longer supported) The PostgreSQL installers include the database server, pgAdmin and StackBuilder. The Installation Guide for PostgreSQL installers can be found in resources section of the website.

RA: A Relational Algebra Interpreter Introduction RA is a simple relational algebra interpreter written in Java. It is built on top of an SQL-based relational database system. It implements relational algebra queries by translating them into SQL queries and executing them on the underlying database system through JDBC. RA is packaged with SQLiteJDBC, so you can use RA as a standalone relational-algebra database system. Currently Supported Database Systems SQLite (SQLite JDBC v056): JDBC driver is included in the JAR. Getting RA The current version of RA is 2.1b. A .tar.gz file with everything including source code. Using RA To run RA, just type "java -jar ra.jar" in the directory containing ra.jar. If you want to connect to another database or a different database system, you need to write a connection properties file of your own. Once you are in RA, you will see the ra> prompt. ADVANCED USERS: Using \sqlexec_{statement};, you can send an SQL command to the underlying database. Known Issues/Limitations

Kernow 1.8 The SAXON XSLT and XQuery Processor Validation & DTDs Table of Content: General overview Well what is validation and what is a DTD ? DTD is the acronym for Document Type Definition. This is a description of the content for a family of XML files. Validation is the process of checking a document against a DTD (more generally against a set of construction rules). The validation process and building DTDs are the two most difficult parts of the XML life cycle. The definition The W3C XML Recommendation (Tim Bray's annotated version of Rev1): (unfortunately) all this is inherited from the SGML world, the syntax is ancient... Simple rules Writing DTDs can be done in many ways. How to reference a DTD from a document: Assuming the top element of the document is spec and the dtd is placed in the file mydtd in the subdirectory dtds of the directory from where the document were loaded: Notes: The system string is actually an URI-Reference (as defined in RFC 2396) so you can use a full URL string indicating the location of your DTD on the Web. Declaring elements:

Nobel scientist Tim Hunt: female scientists cause trouble for men in labs | UK news Scientists should work in gender-segregated labs, according to a Nobel laureate, who said the trouble with “girls” is that they cause men to fall in love with them and cry when criticised. Tim Hunt, an English biochemist who admitted that he has a reputation for being a “chauvinist”, said to the World Conference of Science Journalists in Seoul, South Korea: “Let me tell you about my trouble with girls … three things happen when they are in the lab … You fall in love with them, they fall in love with you and when you criticise them, they cry.” Hunt said he was in favour of single-sex labs, adding that he didn’t want to “stand in the way of women”. The 72-year-old, who won the 2001 Nobel prize in physiology or medicine, made the remarks when addressing a convention of senior female scientists and science journalists. His comments were tweeted by Connie St Louis, who directs the science journalism program at City University, London, and was attending the conference.

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