Transcript DEWDROP - University of Scranton: Computing Sciences Dept.

DEWDROP
Educating students for the future
of web development
John Beidler
Computing Sciences, University of
Scranton, Scranton, PA 18510 ,
USA
E-mail: [email protected]
DEWDROP
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Background
PNA Project
A Web Development Course
DEWDROP and other courses
Conclusions
October 12, 2001
John Beidler - University of Scranton
DEWDROP (Background)
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1997 – First offered as a Special Topics Course
1998-1999 – Course growth
2000 – Offered as a regular course, Cmps 356
2002 – DEWDROP
October 12, 2001
John Beidler - University of Scranton
DEWDROP (Background)
• 1997 – First offered as a Special Topics Course
– Client side: Javascript emphasis
– CGI: Know the standard, use it
– Server side:
• Resources required
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Environmental variables
String processing (Reg. Expr.)
System resources
Call other programs
Access to data representations
• Perl (or tcl) emphasized as a convenience
October 12, 2001
John Beidler - University of Scranton
DEWDROP (Background)
• 1998-1999 – Course growth
– Strong reuse emphasis
• Javascript libraries
• Standardized use of CGI interface
• Perl reuse using “require”.
– PNA Project
– Beginning of web development with OO
October 12, 2001
John Beidler - University of Scranton
DEWDROP (Background)
• 2000-2001 – Offered as a regular course, Cmps
356
– OO based reuse
• 2002 – DEWDROP
October 12, 2001
John Beidler - University of Scranton
The PNA Project
• Joint project
– U. of Scranton – Comp. Sci.
– Marywood U. – Dietetics and Nutrition
• USDA Nutrition Database
• Daily diet analysis
– Currently, 1 to 2 hours per day w. dietitian
– Goal, < 15 minutes per day w/o dietitian
October 12, 2001
John Beidler - University of Scranton
The PNA Project
• Web based (www.scranton.edu/pnap)
– Client Modules
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Daily diet control/analysis
Calorie expenditure
Personal Information
Nutrition Targets
– Dietitian/Health care modules
October 12, 2001
John Beidler - University of Scranton
The PNA Project
• Web based (www.scranton.edu/pnap)
– Client Modules
– Dietitian/Health care modules
• Set client targets
• View client diaries
• Improved (asynchronous) correspondence via the
web and email
October 12, 2001
John Beidler - University of Scranton
A Web Development Course
• Essential resources required
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Environmental variables
String processing
File/directory processing
Resource access
• Concept dependence, not programming language
dependence.
• Using objects to develop a combined client-side,
server-side view.
October 12, 2001
John Beidler - University of Scranton
A Web Development Course
• Low level intro to server side
– Base choice on need
• RE capable
• Associative memory capable
– Prefer Perl or tcl
• Integrated view
– Single resource combining client/server views
– PHP is one alternative
October 12, 2001
John Beidler - University of Scranton
A Web Development Course
• Why Apache/PHP combination
– Price – $0.00
– Availability
• MS windows
• UNIX platforms
– Compatibility between platforms
October 12, 2001
John Beidler - University of Scranton
A Web Development Course
• What about Apache/PHP/database
– Apache/PHP/MySQL
– Apache/PHP/PostGres
October 12, 2001
John Beidler - University of Scranton
DEWDROP and other courses
• Web - Network – Database Courses
– Chicken and egg problem
• Which course is “easier”? More marketable?
– Use it to feed the other two
– No formal pre/co-requisite structure
• The Web course feeds the Network and the
Database courses
– Web as network protocol
– Role of database in web’s future
October 12, 2001
John Beidler - University of Scranton
DEWDROP and other courses
• The Database course feeds the web course
– Use of Java servlets to create a simple (web) front
end to databases.
• The Network course feeds the web course
– See the web from under the hood
– Unix/Apache web security
• Good – Linux/Apache
• Better – FreeBSD/Apache
• Best – VMS/Apache
October 12, 2001
John Beidler - University of Scranton
DEWDROP and other courses
• Is security important?
– Sept. 2001 – Code red and nimda virus attacks
– U. of Scranton web servers
• 3 MS-based, 2 participated, including www.Scranton.edu
• 11 unix based, 0 participated
October 12, 2001
John Beidler - University of Scranton
Conclusions
• If you are teaching HTML, you are not
teaching Web Development.
• If you are teaching Javascript, you are not
teaching Web Development.
• If you are teaching Perl, you are not
teaching Web Development.
• If you are teaching PHP, you are not
teaching Web Development.
October 12, 2001
John Beidler - University of Scranton
Conclusions
• If you are teaching vendor specific
resources, you are not teaching Web
Development.
• If you are teaching ASP, you may get bit by
a snake.
October 12, 2001
John Beidler - University of Scranton
Conclusions
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Web Development must include the basics
Web Development must include standards
Web Development must be recognize patterns
Web Development must be object based
Web Development must be proceed towards
using a database
October 12, 2001
John Beidler - University of Scranton
Conclusions
• Web Development must include security issues
– There is no IIS equivalent to SUExec
• Web Development must be based on
international standards (Apache > 50%)
• Web Development must include software reuse
October 12, 2001
John Beidler - University of Scranton
Conclusions
Database
Enhanced
Web
Development with
Reusable
Objects and
Patterns
October 12, 2001
John Beidler - University of Scranton