Book Image

Julia 1.0 Programming. - Second Edition

By : Ivo Balbaert
Book Image

Julia 1.0 Programming. - Second Edition

By: Ivo Balbaert

Overview of this book

The release of Julia 1.0 is now ready to change the technical world by combining the high productivity and ease of use of Python and R with the lightning-fast speed of C++. Julia 1.0 programming gives you a head start in tackling your numerical and data problems. You will begin by learning how to set up a running Julia platform, before exploring its various built-in types. With the help of practical examples, this book walks you through two important collection types: arrays and matrices. In addition to this, you will be taken through how type conversions and promotions work. In the course of the book, you will be introduced to the homo-iconicity and metaprogramming concepts in Julia. You will understand how Julia provides different ways to interact with an operating system, as well as other languages, and then you'll discover what macros are. Once you have grasped the basics, you’ll study what makes Julia suitable for numerical and scientific computing, and learn about the features provided by Julia. By the end of this book, you will also have learned how to run external programs. This book covers all you need to know about Julia in order to leverage its high speed and efficiency for your applications.
Table of Contents (17 chapters)
Title Page
Copyright and Credits
Packt Upsell
Contributors
Preface
Index

Interacting with databases


Open Database Connectivity (ODBC) is a low-level protocol for establishing connections with the majority of databases and datasources ( for more details, refer to http://en.wikipedia.org/wiki/Open_Database_Connectivity).

Julia has an ODBC package that enables Julia scripts to talk to ODBC data sources. Install the package through Pkg.add("ODBC"), and at the start of the code, run it using ODBC.

The package can work with a system Data Source Name (DSN) that contains all the concrete connection information, such as server name, database, credentials, and so on. Every operating system has its own utility to make DSNs. In Windows, the ODBC administrator can be reached by navigating to Control Panel | Administrative Tools | ODBC Data Sources; on other systems, you have IODBC or Unix ODBC.

For example, suppose we have a database called pubs running in a SQL Server or a MySQL Server, and the connection is described with a DSN pubsODBC. (Included in the code download is a...