For those that attended the MySQL Camp at Google HQ late last year you may have seen me with my own T-Shirt designs. A number of people inquired about getting them. I’ve finally got around to make them available online, so anybody that would like one can order online.

There are two different shirts. If you want your name on the shirt, you need to make sure you choose the correct one.

• Early Adopters – For those that were the first 48 that signed up, your name as well as position and company are on the shirt.
• The Herd – For everybody that registered on the website, your name is on the shirt.

Ok. I’ve already been asked why 48. This was the number of registrants when I got the shirt made back in Australia a week or so before the Camp.

There are also plenty more of my MySQL designs at my MySQL Wear Store.

For those that also liked the runner up pin “A mouse is a waste of a perfectly good hand”, you can also get this in it’s original graphical shirt design at Geek Cool – CLI”

I started this post a month ago, but after Kaj’s discussion on the same topic at the MySQL Camp I figured it was time to post.

I had dinner with a friend recently (a very smart friend), and our conversation lead him to ask “What’s different with MySQL?”. One of the things I tried to describe was the “Pluggable Storage Engine Architecture” (PSE) potential for the future that I expect will set MySQL apart from all other Open Source and even commercial databases.

Here are some details of the example I tried to provide, given somebody who understands enough of the general principles of RDBMS’s.

Consider the ability that information (intelligent data) is available within a Relational Database via the appropriate tools and language (e.g. SQL) but it is not physically constrained to Tables, Columns and Rows of data and an application to manage that data which is the present traditional approach. Let’s use images that you take with your digital camera as an example.

In a typical RDBMS application you would create an application to managed the content of your data, with a number of tables, and links to the images etc. Of course you would need an application as well to both view and manage this information.

What if, you simply pointed your database to a directory of images and then was able to query information such as photos by date, or by size, by album, from a certain location, with given keyword etc. Most of this information about digital photographs is already there. This information is encoded into an Exif format that is embedded within JPEG images.

So what’s missing from this information? Tags and Comments are the most obvious, because this information can’t be determined electronically, this is something that humans do. If you could also embedded this information into an image with a suitable tool then you could be ready to manage your photos.

A further extension would be to have Image Analysis capabilities that enabled you to search for photos that contained the sky, or people, or something that was the color red.

What if in the future, your camera’s had a built in GPS and this information recorded within Exif, and then the ability to extend your output to link to popular on line mapping software such as Google Maps would exist. You could then use your digital camera to track your moves, taking photos that could then plot your path over a holiday, and also enabling location based queries.

It was interesting to postulate what ideas may be possible in the futre. I suspect that it won’t be long before we actually see this. So what are the other potentials that you may not consider. Another example may be a MP3 Dukebox style PSE, managing all the information held with ID tags of MP3 allowing you to do with music what could be done with images.

References

• MySQL 5.1 Manual – 14.1.2. Pluggable Storage Engine Architecture
• MySQL 5.0’s Pluggable Storage Engine Architecture, Part 1: An Overview
• White Paper MySQL 5.0’s Pluggable Storage Engine Architecture
• MySQL 5.0’s Pluggable Storage Engine Architecture Webinar

Exif Example

Here is some example content of Exif using EXIF Tool

 ./exiftool ~/Desktop/2006_02_23_AirShow/IMG_5966.JPG
ExifTool Version Number         : 6.50
File Name                       : IMG_5966.JPG
Directory                       : /home/rbradfor/Desktop/2006_02_23_AirShow
File Size                       : 2 MB
File Modification Date/Time     : 2006:09:24 17:44:32
File Type                       : JPEG
MIME Type                       : image/jpeg
Make                            : Canon
Camera Model Name               : Canon EOS 300D DIGITAL
Orientation                     : Horizontal (normal)
X Resolution                    : 180
Y Resolution                    : 180
Resolution Unit                 : inches
Modify Date                     : 2006:02:23 16:01:56
Y Cb Cr Positioning             : Centered
Exposure Time                   : 1/320
F Number                        : 10.0
ISO                             : 200
Exif Version                    : 0221
Date/Time Original              : 2006:02:23 16:01:56
Create Date                     : 2006:02:23 16:01:56
Components Configuration        : YCbCr
Compressed Bits Per Pixel       : 3
Shutter Speed Value             : 1/320
Aperture Value                  : 10.0
Max Aperture Value              : 3.5
Flash                           : No Flash
Focal Length                    : 18.0mm
Macro Mode                      : Unknown (0)
Self-timer                      : 0
Quality                         : Fine
Canon Flash Mode                : Off
Continuous Drive                : Single
Focus Mode                      : AI Focus AF
Canon Image Size                : Large
Easy Mode                       : Manual
Digital Zoom                    : Unknown (-1)
Contrast                        : +1
Saturation                      : +1
Sharpness                       : +1
Camera ISO                      : n/a
Metering Mode                   : Evaluative
Focus Range                     : Not Known
AF Point                        : Manual AF point selection
Canon Exposure Mode             : Program AE
Lens Type                       : Unknown (-1)
Long Focal                      : 55
Short Focal                     : 18
Focal Units                     : 1
Max Aperture                    : 3.6
Min Aperture                    : 22
Flash Activity                  : 0
Flash Bits                      : (none)
Zoom Source Width               : 3072
Zoom Target Width               : 3072
Color Tone                      : Normal
Focal Plane X Size              : 23.22mm
Focal Plane Y Size              : 15.49mm
Auto ISO                        : 100
Base ISO                        : 200
Measured EV                     : 9.00
Target Aperture                 : 10
Target Exposure Time            : 1/318
Exposure Compensation           : 0
White Balance                   : Auto
Slow Shutter                    : None
Shot Number In Continuous Burst : 0
Flash Guide Number              : 0
Flash Exposure Compensation     : 0
Auto Exposure Bracketing        : Off
AEB Bracket Value               : 0
Focus Distance Upper            : -0.01
Focus Distance Lower            : 5.46
Bulb Duration                   : 0
Camera Type                     : EOS Mid-range
Auto Rotate                     : None
ND Filter                       : Unknown (-1)
Self-timer 2                    : 0
Bracket Mode                    : Off
Bracket Value                   : 0
Bracket Shot Number             : 0
Canon Image Type                : IMG:EOS 300D DIGITAL JPEG
Canon Firmware Version          : Firmware Version 1.1.1
Camera Body No.                 : 0930402471
Serial Number Format            : Format 1
File Number                     : 159-5966
Owner's Name                    :
Canon Model ID                  : EOS Digital Rebel / 300D / Kiss Digital
Canon File Length               : 2387078
WB RGGB Levels Auto             : 1726 832 831 948
WB RGGB Levels Daylight         : 0 0 0 0
WB RGGB Levels Shade            : 0 0 0 0
WB RGGB Levels Cloudy           : 0 0 0 0
WB RGGB Levels Tungsten         : 0 0 0 0
WB RGGB Levels Fluorescent      : 0 0 0 0
WB RGGB Levels Flash            : 0 0 0 0
WB RGGB Levels Custom           : 0 0 0 0
WB RGGB Levels Kelvin           : 0 0 0 0
Color Temperature               : 5200
Num AF Points                   : 7
Canon Image Width               : 3072
Canon Image Height              : 2048
Canon Image Width As Shot       : 3072
Canon Image Height As Shot      : 2048
AF Points Used                  : Mid-left
Preview Quality                 : Normal
Preview Image Length            : 278318
Preview Image Width             : 1536
Preview Image Height            : 1024
Preview Image Start             : 2108760
Preview Focal Plane X Resolution: 3443.9
Preview Focal Plane Y Resolution: 3442.0
User Comment                    :
Flashpix Version                : 0100
Color Space                     : sRGB
Exif Image Width                : 3072
Exif Image Length               : 2048
Interoperability Index          : R98 - DCF basic file (sRGB)
Interoperability Version        : 0100
Related Image Width             : 3072
Related Image Length            : 2048
Focal Plane X Resolution        : 3443.946
Focal Plane Y Resolution        : 3442.017
Focal Plane Resolution Unit     : inches
Sensing Method                  : One-chip color area
File Source                     : Digital Camera
Custom Rendered                 : Normal
Exposure Mode                   : Auto
Scene Capture Type              : Standard
Compression                     : JPEG (old-style)
Thumbnail Offset                : 2560
Thumbnail Length                : 7680
Image Width                     : 3072
Image Height                    : 2048
Aperture                        : 10.0
Drive Mode                      : Single-frame shooting
Flash                           : Off
Image Size                      : 3072x2048
Lens                            : 18.0 - 55.0mm
Preview Image                   : (Binary data 278318 bytes, use -b option to extract)
Preview Image Size              : 1536x1024
Scale Factor To 35mm Equivalent : 1.6
Shooting Mode                   : Program AE
Shutter Speed                   : 1/320
Thumbnail Image                 : (Binary data 7680 bytes, use -b option to extract)
WB RGGB Levels                  : 1726 832 831 948
Blue Balance                    : 1.140108
Circle Of Confusion             : 0.019 mm
Focal Length                    : 18.0mm (35mm equivalent: 27.9mm)
Hyperfocal Distance             : 1.67 m
LV                              : 14.0
Lens                            : 18.0 - 55.0mm (35mm equivalent: 27.9 - 85.3mm)
Red Balance                     : 2.075767

It seems, people are clammering for a more consolidated help guide for SQL Performance tips.

Jay Pipes at the MySQL Camp ran a session Interactive Top 10 SQL performance Tips. There was plenty of input and discussion, and at the time Sheeri simply typed them into a wiki page for later work.

Well it seems even that rough list is popular at Del.icio.us ranking near the top of the Hot List on the front page. I saw it earlier and it was second or third, but didn’t think of taking a screen shot until now, but it’s still high.

I’d say that we could easily get the Top 10 for up to 10 different categories rather easily. Good luck Jay.