Midterm ExamChapters 1,2,3,5, 6,7

(closed book)

March 11, 2014

COP4710

• Part 1: Database Application Development

• Part 2: Theory and Database System Internal

Midterm Exam

3-Tier Architecture

Chapters 1, 2, 3 & 5

Chapter 7Chapter 7

Chapter 6

Chapter 1: Introduction to Database Systems

• Why use a DBMS ?• What is a data model ?• 3-layer architecture: physical schema, conceptual

schema, views• Concurrency control and transaction processing

Study Time: 2 hours

Chapter 2: Conceptual Design• ER model • Entity set• Relationship• Key constraint, i.e., 1-to-many relationship• Participation constraint: total vs partial

• ER design considerations• Entity vs attribute• Binary vs ternary relationship

Study Time: 2 hours

Chapter 3: Relational Model• Basic concepts: relation and tuple • Create relations using SQL• create relations• add and delete tuples• specify constraints: primary key constraint,

referential integrity constraint• create views

• ER diagram to SQL mapping

Study Time: 2 hours

Chapter 5: SQL• Semantics of SQL:

SELECT … FROM … WHERE … GROUP BY … HAVING …

• How to write queries• Basic SELECT-FROM-WHERE queries• Queries with set operators such as UNION, INTERSECT, and

EXCEPT• Nested queries• Queries based on the Division operation • Queries with aggregate operators

• General constraint (in a relation) & assertion (over multiple relations)

• Triggers Study Time: 3 hours

Chapter 7: Internet Computing• Web data format: HTML, XML, DTD• 3-tier architecture• Presentation tier: HTML Form, Javascript, Stylesheet• Application tier• CGI, • Application Servers, Servlets (Code first, webpage

second) • JavaServerPages (Webpage first, code second)• Maintaining state: Cookies, hidden fields (in forms),

extra path informationStudy Time: 4 hours

Chapter 6: Internet DB Apps• Embedded SQL and Cursor• Dynamic SQL using PREPARE and EXECUTE statements• JDBC (java.sql package)

• Four types of JDBC drivers• Load driver, connect to data source, execute SQL statements (using

Statement object, PreparedStatement object, or CallableStatement object)

• Transaction processing in JDBC• Exception and warning• DatabaseMetaData Object (for catalog information)

• SQLJ - Similar to embedded SQL; but using industry-standard interface

• Stored procedures: Writing stored procedure using SQL/PSM, how to call stored procedure from JDBC and SQLJ

Study Time: 4 hours

Study Time RequiredTask Time Required

Study 400 pages of Powerpoint slides 17 hrsPractice the homeworks 3 hrsPractice the SQL examples in textbook 4 hrsTOTAL TIME NEEDED 24 HRS

A: 90 ~ 100 Excellent

B: 80 ~ 89.99 Good

C: 70 ~ 79.99 Can be improved

D: 60 ~ 69.99 Need to spend more time on the final

F: < 60

Grades