TweetFollow Us on Twitter

Jun 00 Online

Volume Number: 16 (2000)
Issue Number: 6
Column Tag: MacTech Online

Relational Databases for Mac OS X Server

by Jeff Clites <online@mactech.com>

Earlier this year we covered WebObjects, but we didn't go into detail about the database solutions available to use with it. This month we are going to cover relational databases which run under Mac OS X Server. I should mention up front, though, that it's perfectly possible, and quite common, to run your application server and database on different machines, under different platforms. There can be convenience and speed advantages to running everything on one machine, but as your website scales up to higher capacities, you're certain to reach a point where you need to run multiple copies of your application server, on multiple machines, and modern databases are designed with the expectation that they will be accessed simultaneously from multiple locations. Of course, backing a WebObjects application is only one use for a database, and you may have other reasons for wanting a solution that you can run locally.

Database Adaptors

I should also explain a little bit about the way that WebObjects interfaces with databases. They communicate through an EOAdaptor, which usually takes the form of a shared library. The adaptor and the rest of the Enterprise Objects Framework (EOF) take care of most of the details of this communication, so that the developer doesn't have to worry about differences between the databases or between the dialects of SQL that they support. (It's even possible to develop adaptors to interface to non-relational databases, and Apple supplies an example Flat File Adaptor which lets you access formatted text files as though they were database tables.) Apple supplies EOAdaptors for Oracle, Sybase, Informix, and ODBC, although not for all platforms on which WebObjects runs. There are third-party adaptors available for many others—all of the databases we'll cover below have adaptors available. Note that there is currently no ODBC EOAdaptor available for Mac OS X Server, because the ODBC libraries aren't available for the platform, and neither are drivers for any of the databases you may wish to access by ODBC. (ODBC, or Open Database Connectivity, is a technology invented by Microsoft, and attempts to allow you to access different databases via a common API, with support for different databases being supplied by ODBC drivers. Its goal is analogous to that of the EOF, although it is functionally quite different.) Third parties have announced that they plan to bring ODBC support to Mac OS X, but it hasn't arrived yet.

SQL-based Databases

You have three main choices if you do want an SQL-based database which runs on Mac OS X Server itself: FrontBase, OpenBase, and MySQL. Each has its advantages and disadvantages, and the best choice will depend on your situation.

OpenBase has had a long history on the OpenStep platform, and was written specifically to run there. It comes with graphical administration tools, and has a few features, such as the ability to notify applications when data changes and integration with REALbasic, which are not commonly found in other databases. Mac OS X Server ships with OpenBase Lite, a free version which allows you to work with the included sample databases, but this version lacks administration tools and isn't really appropriate for development work. There is also a fully functional, time-limited demonstration version which you can download from the OpenBase website. This gives you ample opportunity to try out OpenBase for yourself, but for actual development or deployment you need to obtain a commercial license. Also note that OpenBase is available for Windows NT and Solaris, in addition to Mac OS X Server, so it is a good match for heterogeneous environments in which multiple operating systems are used, or migration from one to another is likely.

FrontBase, produced by Frontline Software of Denmark, is a cross-platform database written in C. It runs on a variety of platforms, including Mac OS X Server, Windows NT, Solaris, and Linux. Like OpenBase, it includes graphical administration tools, allowing you to create and manage databases easily. (Of course, you can also do this using SQL directly.) One key attraction of FrontBase is its flexible licensing terms. There are a number of different levels, based on different degrees of support and different features, such as bulk import tools and the ability to lock tables in memory. The lowest level is free, and is fully functional but lacks security features. This basic version is more than adequate for development work, and can even be used for deployment if you keep it safely behind a firewall.

The third choice is the open source database MySQL. (It's open source, but there is a fee for some types of commercial usage.) MySQL is very popular in the Linux community, and Anjo Krank has created a set of patches which allows it to run under Mac OS X Server. Actually, recent versions of MySQL will compile and run without patching, although you need a pthreads compatibility library which he provides. (He has also developed an EOAdaptor for MySQL, and a Perl DBI driver for FrontBase.) MySQL's claim to fame, other than being open source, is that it is extremely fast. The reason for its speed is, in part, that it lacks certain key database features, such as transactionality and rollback. These are major capabilities to do without, and in fact technically disqualify it from being a relational database, but if you can live with its limitations then it can be an excellent choice for many applications. Due to its heritage, you'll have to survive without built-in graphical management tools, but in the database arena it is often convenient to manage your database directly via SQL, because it allows you to easily save and reuse scripts for common tasks.

Oracle

As I mentioned before, you can certainly run your database on another platform, even if you are developing for Mac OS X Server. One setup you may want to consider is running Oracle8i under Linux. (This would unfortunately mean running it on an Intel box—Oracle runs neither on Mac OS X Server, nor on LinuxPPC. Given that Larry Ellison sits on Apple's board of directors, there is some hope that this situation may improve in the future. A Darwin version could do amazing things for the platform.) Neither Oracle nor Linux is trivial to administer, but I've heard it argued pretty convincingly that you should use Oracle from the beginning, even if you thing it's more database than you need. The argument goes that if you are running a database-backed website, you will eventually need Oracle, and your life will be easier if you don't have to deal with migrating to, and learning to administer, a new database just when your business is taking off and you're exceeding your capacity. (It's also true that both Linux and Oracle experience looks good on a resume these days.) Oracle is by far the most widely used database on the planet, and it has an excellent reputation for performance and reliability, although it's almost impossible to get hard numbers to quantify this. Personal experience has led me to believe that commercial databases all perform similarly when it comes to raw retrieval speed, although Oracle's unique approach to concurrency control and locking should give it an advantage when many processes are writing to the database at the same time. (In a nutshell, readers and writers rarely interfere with one another.) Oracle also has a very well thought out approach to backup management, and if your database fails you can often recover all the way up to the very last transaction committed. While making your decision, you should be aware that Oracle is extremely expensive, and although its licensing scheme is difficult to decipher, it does appear to be free for development use. If you plan on running a business which will depend on your database, you should give Oracle serious consideration. For extremely high-capacity deployments you will probably want to run Oracle on Solaris, and migrating from Linux to Solaris will be much easier than migrating from a different database architecture. (Oracle has been very good about making its database operate almost identically on all supported platforms.)

Once you've committed to a database, check out the MacTech Online web pages at <www.mactech.com/online/>.

 

Community Search:
MacTech Search:

Software Updates via MacUpdate

iWatermark Pro 1.72 - Easily add waterma...
iWatermark Pro is the essential watermarking app for professional, business, and personal use. iWatermark, is the number 1 and only watermarking tool available for all 4 platforms iPhone/iPad, Mac,... Read more
RapidWeaver 6.3 - Create template-based...
RapidWeaver is a next-generation Web design application to help you easily create professional-looking Web sites in minutes. No knowledge of complex code is required, RapidWeaver will take care of... Read more
Adobe Photoshop CC 2015 16.0.1 - Profess...
Photoshop CC 2015 is available as part of Adobe Creative Cloud for as little as $19.99/month (or $9.99/month if you're a previous Photoshop customer). Photoshop CS6 is still available for purchase (... Read more
Together 3.4.6 - Store and organize all...
Together helps you organize your Mac, giving you the ability to store, edit and preview your files in a single clean, uncluttered interface. Smart storage. With simple drag-and-drop functionality,... Read more
Monosnap 3.1.0 - Versatile screenshot ut...
Monosnap lets you capture screenshots, share files, and record video and .gifs! Capture: Capture full screen, just part of the screen, or a selected window Make your crop area pixel perfect with... Read more
Cocktail 8.5.1 - General maintenance and...
Cocktail is a general purpose utility for OS X that lets you clean, repair and optimize your Mac. It is a powerful digital toolset that helps hundreds of thousands of Mac users around the world get... Read more
Vienna 3.0.6 :5eaf312: - RSS and Atom ne...
Vienna is a freeware and Open-Source RSS/Atom newsreader with article storage and management via a SQLite database, written in Objective-C and Cocoa, for the OS X operating system. It provides... Read more
Kodi 15.1.rc1 - Powerful media center to...
Kodi (was XBMC) is an award-winning free and open-source (GPL) software media player and entertainment hub that can be installed on Linux, OS X, Windows, iOS, and Android, featuring a 10-foot user... Read more
Bookends 12.5.8 - Reference management a...
Bookends is a full-featured bibliography/reference and information-management system for students and professionals. Access the power of Bookends directly from Mellel, Nisus Writer Pro, or MS Word (... Read more
Chromium 44.0.2403.125 - Fast and stable...
Chromium is an open-source browser project that aims to build a safer, faster, and more stable way for all Internet users to experience the web. Version 44.0.2403.125: This release contains a number... Read more

Five Nights at Freddy's 4 has Been...
In keeping with tradition, Five Nights at Freddy's 4 has made its way to the App Store with zero warning fanfare. Honestly I'd be disappointed it if happened any other way at this point. [Read more] | Read more »
Doom & Destiny Advanced (Games)
Doom & Destiny Advanced 2.3.4.0 Device: iOS Universal Category: Games Price: $.99, Version: 2.3.4.0 (iTunes) Description: ---SUPER GIGA LAUNCH DISCOUNT! Get it now for cheap or pay more later!---An additional 143 MB download is... | Read more »
Five Nights at Freddys 4 (Games)
Five Nights at Freddys 4 1.0 Device: iOS Universal Category: Games Price: $2.99, Version: 1.0 (iTunes) Description: This time, the terror has followed you home. | Read more »
This Week at 148Apps: July 27-31, 2015
Winding Down July With 148Apps How do you know what apps are worth your time and money? Just look to the review team at 148Apps. We sort through the chaos and find the apps you're looking for. The ones we love become Editor’s Choice, standing out... | Read more »
You'll Want to Keep an Eye Out for...
If you're the kind of person who had fun hunting down and completing all the codex puzzles in Assassin's Creed 2, then are you ever in for a treat. The Guides looks like it's going to be a very robust collection of similarily odd, seemingly... | Read more »
Vivid Games has Announced Real Boxing 2...
The original Real Boxing was a pretty impressive bit of fisticuffs, but if the trailer Vivid Games is showing off for GamesCom is any indication Real Boxing 2 is going to be even better. [Read more] | Read more »
PAC-MAN Championship Edition DX - Tips,...
[Read more] | Read more »
Card King: Dragon Wars - Tips, Tricks an...
[Read more] | Read more »
Pac-Man Championship Edition DX has brou...
Bandai Namco has released Pac-Man Championship Edition DX on iOS and Android, which features the classic arcade gameplay that we've all grown to love. Pac-Man Championship Edition DX can be enjoyed in much shorter bursts than the arcade versions... | Read more »
Cosmonautica (Games)
Cosmonautica 1.1 Device: iOS Universal Category: Games Price: $6.99, Version: 1.1 (iTunes) Description: Cast off! Are you ready for some hilarious adventures in outer space? | Read more »

Price Scanner via MacPrices.net

MacBook 12 Retina Pundit’s New Favorite Mac
If you’re eyeing the purchase of a new 12-inch Retina MacBook, but wondering if you can live with a single USB-C port, 2011-level CPU performance, and the unorthodox keyboard, you should find... Read more
PDF Element Tool Kit For PDF For Windows 10,...
South Surrey, British Columbia based software developer Wondershare has posted an interesting infographic tracking the development of Microsoft’s flagship Windows operating system over the years,... Read more
27-inch 3.5GHz 5K iMac on sale for $81 off MS...
Adorama has the 27″ 3.5GHz 5K iMac on sale for $2218, $81 off MSRP, including a free copy of Apple’s 3-Year AppleCare Protection Plan. Shipping is free, and Adorama charges sales tax in NY & NJ... Read more
Back-to-School with Tablet and Smartphone Acc...
Belkin helps you prepare for the coming school year with a wide variety of the latest mobile and tablet accessories to outfit both grade school and college students. The line-up includes charging... Read more
11-inch MacBook Airs on sale for $100 off MSR...
Best Buy has 11-inch MacBook Airs on sale for $100 off MSRP. Choose free shipping or free local store pickup (if available). Sale prices for online orders only, in-store prices may vary: - 11″ 1.6GHz... Read more
iPad Air 2 on sale for up to $100 off MSRP
Best Buy has iPad Air 2s on sale for up to $100 off MSRP on their online store for a limited time. Choose free shipping or free local store pickup (if available). Sale prices available for online... Read more
Sale! 13-inch MacBook Pros on sale for $100 o...
B&H Photo has 13″ MacBook Pros on sale for $100 off MSRP. Shipping is free, and B&H charges NY sales tax only: - 13″ 2.5GHz/500GB MacBook Pro: $999.99 save $100 - 13″ 2.7GHz/128GB Retina... Read more
Sale! Save $100 on 13-inch MacBook Airs this...
B&H Photo has the 13″ 1.6GHz/128GB MacBook Air on sale for $899.99 including free shipping plus NY tax only. Their price is $100 off MSRP, and it’s the lowest price available for this model.... Read more
Worldwide Tablet Market Decline Continues, Ap...
The worldwide tablet market declined -7.0% year-over-year in the second quarter of 2015 (2Q15) with shipments totaling 44.7 million units according to preliminary data from the International Data... Read more
TP-LINK TL-PA8030P KIT Powerline Featuring Ho...
Consumer and business networking products provider TP-LINK is now shipping its TL-PA8030P KIT AV1200 3-Port Gigabit Passthrough Powerline Starter Kit that expands your home’s network over its... Read more

Jobs Board

*Apple* Retail - Multiple Positions (US) - A...
Sales Specialist - Retail Customer Service and Sales Transform Apple Store visitors into loyal Apple customers. When customers enter the store, you're also the Read more
Infrastructure Engineer - *Apple* /Mac - Hil...
Infrastructure Engineer - Apple /Mac Job Code: 1608 # of openings: 1 Description Our fortune 500 client is looking to hire an experienced Infrastructure Engineer to join Read more
Executive Administrative Assistant, *Apple*...
…supporting presentation development for senior leadership. * User experience with Apple hardware and software is preferred. Additional Requirements The following list Read more
*Apple* Bus Company is now hirin - Apple Bus...
Apple Bus Company is now hiring school bus drivers in the Pettis County area. Class B CDL preferred. Free training provided. No nights or weekends required. Flexible Read more
*Apple* Certified Mac Technician - Updated 6...
…and friendly, hands-on technical support to customers troubleshooting and repairing Apple /Mac products with courtesy, speed and skill. Use your problem-solving skills Read more
All contents are Copyright 1984-2011 by Xplain Corporation. All rights reserved. Theme designed by Icreon.