30 Jan HOW GROUP FUNCTIONS DIFFER
CIS336 Introduction to Database With Lab
Week 1 discussion
NORMAL FORMS AND ENTITY RELATIONSHIP DIAGRAMS
We hear the term database all the time. Give some examples of databases that you interact with on a regular basis. What makes a database relational? What is a file storage system? How does a relational database differ from a file storage system?
CIS336 Introduction to Database With Lab
Week 2 discussion
DEVELOPING A GOOD DATA MODEL
The database data model is the communication link between the designer, applications programmer, and user. Contribute your views on what constitutes a good data model and why.
CIS336 Introduction to Database With Lab
Week 3 discussion
BUILDING THE PHYSICAL MODEL
What is the importance of constraints in a physical model? What role do different constraints play in maintaining referential integrity and data integrity?
CIS336 Introduction to Database With Lab
Week 4 discussion
UNDERSTANDING THE SELECT STATEMENT
Reports are generated using queries to a database. The SELECT statement is used to retrieve data from one or many tables in a database. Just as in other programming languages, understanding the syntax of a select statement is key. Let’s first discuss the key clauses in a SELECT statement and the purpose of each.
CIS336 Introduction to Database With Lab
Week 5 discussion
GETTING DATA FROM MULTIPLE TABLES
It is not uncommon to have to retrieve data that resides in several tables, especially when formulating a report. Discuss some of the performance issues when querying three or four tables at a time.
CIS336 Introduction to Database With Lab
Week 6 discussion
HOW GROUP FUNCTIONS DIFFER FROM SINGLE-ROW FUNCTIONS
What are some examples of group functions, and how do they differ from single-row functions?
CIS336 Introduction to Database With Lab
Week 7 discussion
DATABASE VIEWS
What are the advantages of selecting data from a view over selecting data from a base table?
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