1. CS 160: Software Engineering October 8 Class Meeting
Department of Computer Science San Jose State University Fall 2014 Instructor: Ron Mak

2. Midterm Review What is software engineering? Complexity and change
Collaboration, communication, and coordination
Processes and methodologies _

3. Midterm Review Web application architecture
Client-server
Static and dynamic web pages
Web development tools and technologies
Tomcat and NetBeans
Servlets, JSPs, and JavaBeans
MySQL relational database manager _

4. Midterm Review, cont’d Servlets JavaServer Pages (JSP)
Application logic
Redirection to other servlets or to JSPs
JavaServer Pages (JSP)
Translated to servlets by Tomcat _

5. Midterm Review, cont’d Deploying web applications (.war files)
Manual deployment to Tomcat
Tomcat web application manager
Development and deployment with NetBeans _

6. Midterm Review, cont’d Project phases Waterfall model
Agile software development _

7. Midterm Review, cont’d Requirements Use cases Elicitation
Functional and nonfunctional
Use cases
UML use case diagrams
Use case descriptions _

8. Midterm Review, cont’d Git Version control system File states
Clone, push, pull
Add, commit
Conflict resolution
GitHub
SmartGit

9. Midterm Review, cont’d Conceptual design Problem statement
Product objectives and features
Major modules _

10. Midterm Review, cont’d Analysis model System design Functional model
Analysis object model
Dynamic model
System design
Subsystem decomposition, partitioning, and layering
Framework classes and the initial thread of control
Loose coupling vs. high cohesion

11. Midterm Review, cont’d Model-View-Controller architecture
Controller (servlets)
View (JSPs)
Model (JavaBeans) objects
Loose coupling and parallel development

12. Midterm Review, cont’d Server-side architecture
Multilayered
Data access layer
Unified Modeling Language (UML)
Package, class, and sequence diagrams
Aggregations, compositions, and inheritance
Attributes and methods

13. Midterm Review, cont’d Data repository Data modeling
Data independence, redundancy, inconsistency, access, disparity, concurrency, security, and integrity
Data modeling
Conceptual, logical, and physical models
Entities and relationships
One-to-one, one-to-many, many-to-many
Normalization: 1NF and 2NF
ER diagrams

14. Midterm Review, cont’d
MySQL relational database management system (RDBMS)
Command-line interface
SQL
Create and drop databases and tables
Query tables
Joining tables
Insert, update, and delete record

15. Midterm Review, cont’d MySQL Workbench View and manipulate table data
EER diagrams
Forward and reverse engineering _

16. Midterm Review, cont’d JDBC Java connection to a database
connection pool
Statements and prepared statements
Query, insert, update, delete records
Result sets
Object-relational mapping
JavaBeans

17. Example Midterm Questions
Briefly describe the contents of each of the following:
Requirements specification
Software prototype
Conceptual design
Design document

18. Example Midterm Questions, cont’d
Consider the use case where a user moves a file from one directory into another within the file system. Suppose you implemented it with a graphical user interface (GUI) based on the model-view-controller (MVC) architecture. The user does the file move by dragging the image of a document on the screen with the mouse from one folder image into another.
Identify the model, the view, and the controller objects.
Draw a UML sequence diagram of the interaction described by this use case.

19. Example Midterm Questions, cont’d
Model
File system components
Physical files and directories that exist on disk
View
GUI objects
Folders and documents as shown on the screen _

20. Example Midterm Questions, cont’d
Controller
The interface (“bridge”) between the GUI and the file system.
The code that translates the GUI actions to operations on the underlying file system. _

21. Example Midterm Questions, cont’d
User
Source
Folder
Destination
Folder
GUI-FS
Bridge
File
System
select document
confirm selection
start drag
send source folder and source document info
detach document
from source folder
send move command
with source file path and
destination directory path
send destination
folder info
end drag
display document in destination folder
confirm file move
confirm file move

22. Example Midterm Questions, cont’d
Suppose a teaching assistant for this CS 160 class wanted to build a relational database to keep track of the project teams. His first attempt at the database consists of a single table, as shown in the ER diagram.

23. Example Midterm Questions, cont’d
For each of the following queries, either write the SQL statement to perform the query based on this database, or explain why the query would be difficult to do.
What are the name and URL of team Alpha’s product?
SELECT product_name, product_URL FROM team WHERE team_name = ‘Alpha’

24. Example Midterm Questions, cont’d
Who’s on team Beta?
Which team is Mary Jones on and what is her project grade?
Difficult (tedious, at least) to do because of the
repeated student fields. Each first name/last
name pair would need to be listed separately
in the SELECT clause.
Also difficult to do because the test for
Mary Jones would have to be duplicated
for each student in the row and then
OR’d together.

25. Example Midterm Questions, cont’d
Normalize to 2NF the project team database. Remember that each student on a particular project team will receive the same project grade. PK FK