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Financial Information Management
How do I talk
to a DBMS?
SQL
In one hour
Critical Thinking
 Easy meter
Before Querying….
 Figure out what data is available
 Ask about the data model and
A picture of the
the data dictionary, but…
contents of the
database
 …they may not have it.
A text description of the
contents of the
database (e.g. columns
content)
Real World Example
(fragment)
Financial Information Management
SmallBank Ltd.
Database example
Loan Officer Table
ACTUAL TABLE
DIAGRAM
LO id
f name
l name
phone
Data Model: SmallBank,Ltd.
One
Many
Reading the Relationships
1
6
One
5
2
3
Many
4
Navigating the Relationship (join)
foreign key: a PK in
another table, used
to link the two tables
Different Dialects, Same Idea
Chen
Modified
Chen (IE)
IDEF1X
Microsoft
Loan
Loan
Loan
Employee
Loan
Employee
0:n
admin by
admin by
Admin by
1:1
Loan Officer
Loan Officer
Loan
Officer
Dept
Loan
Officer
Dept
Financial Information Management
WINIT
What Is New
In Technology?
Financial Information Management
Homework
SQL Practice
SQL

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Structured Query Language
The standard language for databases
70s:
- Codd
- SEQUEL – Structured English QUEry Language



commercialized it in 1979
1986 ISO/ANSI
Sometimes sought as a required skill in interviews
SQL EXAMPLE: A QUERY
SELECT First_Name, Last_Name,
ssn
FROM StudentTbl
WHERE gpa > 3.0
ORDER BY Last_Name;
4+2 BASIC SQL COMMANDS

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
SELECT
INSERT
UPDATE
DELETE
 CREATE
 DROP
Interacting with a DB (1)
SQL
Web server
You
Your browser
On your local machine
(e.g., laptop, lab PC)
DBMS
On a Server somewhere
Data
(Customer,
Product,
Order)
Interacting with a DB (2)
SQL
Some BI
software
You
On your local machine
(e.g., laptop, lab PC)
Example: Tableau, Excel
DBMS
On a Server somewhere
Data
(Customer,
Product,
Order)
Interacting with a DB (3)
SQL
You
Visual Studio
Your local machine
(e.g., laptop, lab PC)
SQL Server
DBMS
Server in the McIntire datacenter
F-sg6m-s4.comm.virginia.edu
Small
Bank DB
(Loan, Loan
Officer,
Customer…)
DEMO
Suggestions
Easier to connect from the labs.
Connecting from your laptop or home
requires a VPN
You do the talking





Name, Major
Learning Objectives
Things you like about the class
Things that can be improved
Attitude towards the Tournament