Download Business Informatics 2 (PWIN) Exercise 1: SQL

Fachbereich Wirtschaftswissenschaften
Institut für Wirtschaftsinformatik
Professur für Mobile Business & Multilateral Security
Fachbereich
Wirtschaftswissenschaften
Exercise
Business Informatics 2 (PWIN)
Winter Term 2013/14
Institut für Wirtschaftsinformatik
Professur für Mobile Business & Multilateral Security
www.m-chair.net
Prof. Dr. Kai Rannenberg
Telefon
+49 (0)69-798 34701
Telefax
+49 (0)69-798 35004
E-Mail [email protected]
Exercise VI:
SQL
Sascha Koschinat, Dipl.-Kfm.
E-Mail [email protected]
Shuzhe Yang, M.Sc.
E-Mail [email protected]
Exercise 1: SQL Statements
The database InstantONS® consists of two tables:
Table: Customer_data
Table: Customer_interests
Campus Westend • Grüneburgplatz 1 • D-60323 Frankfurt am Main
H i e r
w i r d
W i s s e n
W i r k l i c h k e i t
Write the appropriate SQL statements to answer the following questions and draw the table which
will be returned as a result.
a) How many customers are stored in the table „Customer_data“?
b) What is the average weight over all InstantONS® users?
c) What is the weight of the heaviest customer?
d) How many people were logged in per day?
e) How many male (female) users do exist in InstantONS®?
f) Display the Usernames of all users born in 1975.
g) Display the “Username“ and “Birthdate” of all users, sorted descending.
h) How many users are “topfit“?
i) How many users are “unfit“?
j) Display the “Username”, “Gender” and the first two hobbies of each user.
k) How many users are female and are playing „Video games“ as first or second hobby?
l) How many users are “single“, but do have kids?
m) Display the “Username”, “Gender”, “Size” and the according hobbies of each user.
n) How many users registered for InstantONS® in 2006?
o) Display the “Username”, “Haircolor” and the first hobby of all users.
p) Insert a data record into the table “Customer_data“ and display it with all attributes.
q) Insert a data record into the table “Customer_data“ and display it with “CustomerID” and “Hobby2” only.
r) Update the “Weight” of the user with the CustomerID „2057454“ to 62 kilograms.
s) Delete the entry inserted in Exercise p).
u) Delete the whole table „Customer_interests“.
v) Delete the whole database.
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