……... business informatics 2 (pwin) ss 2011, chair of mobile business & multilateral...
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Business Informatics 2 (PWIN) SS 2011, Chair of Mobile Business & Multilateral Security 1
Jenser (Flickr.com)
Chair of Mobile Business & Multilateral Security
Exercise 4Business Informatics 2 (PWIN) Markup Languages & Databases &Structured Querry LanguageSS 2011
Dr. Andreas Alberswww.m-chair.net
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Agenda
Exercise 1: Repetition XML (Mentorium)
Exercise 2: Well-formed XML Documents
Exercise 3: Validated XML Documents
Exercise 4: ER-Model
Exercise 5: Repetition SQL (Mentorium)
Exercise 6: SQL Statements
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XML Example
Write a DTD for the storage of a dynamic customer profile based on the Myplace example. Furthermore write an example XML document which is based on this DTD.
The customer profile shall include a user’s pseudonym, login time, current location, personal data (age, gender, interests). Possible interests are cinema, restaurant, tennis, soccer, sports bar… .
Example for XML Document: Pseudonym: mobileFritz1380, Age: 25,
gender: male Interests: Cinema, Restaurants
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Business Informatics 2 (PWIN) SS 2011, Chair of Mobile Business & Multilateral Security 4
DTD & XML Dokument “User”
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Agenda
Exercise 1: Repetition XML (Mentorium)
Exercise 2: Well-formed XML Documents
Exercise 3: Validated XML Documents
Exercise 4: ER-Model
Exercise 5: Repetition SQL (Mentorium)
Exercise 6: SQL Statements
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Exercise 2: Well-formed XML Documents
Which of the following XML Documents are well-formed (two XML Documents per page)?
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Exercise 2: Well-formed XML Documents (1)
<?xml version="1.0"?>
<User>
<Pseudonym>
Jenny23
</Pseudonym>
<Mobile_Operator>
t-mobile
</ Mobile_Operator >
<Registration>
03.02.2007
</Registration>
<Lastlogin>
29.04.2007
</Lastlogin>
</User>
<?xml version="1.0"?>
<User>
<Pseudonym>
Joe1976
</Pseudonym>
< Mobile_Operator >
vodafone
</ Mobile_Operator >
< Registration >
03.02.2007
< Lastlogin >
29.04.2007
</User>
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Business Informatics 2 (PWIN) SS 2011, Chair of Mobile Business & Multilateral Security 8
Exercise 2: Well-formed XML Documents (2)
<?xml version="1.0"?>
<Date>
<Place>
Fressgass 17, Frankfurt
</ Place >
<Time>
25.03.2007, 21:15-0:15
</Time>
<Meeting_Point>
Starbucks
<People>
Gina
</Meeting_Point>
</People>
<People>
Jimmy
</People>
<Activitiy>
Cocktails
</Activitiy>
<Comment>
Gina 2 Caipis ausgegeben
</Comment>
</Date>
<?xml version="1.0"?><Date><Place>
Schweizer Strasse, Frankfurt</Place><Time>
25.03.2007, 21:15-0:15</Time><Meeting_Point>
Apfelwein-Wagner</Meeting_Point><People> Pit</People><People>
Jenny23</People><Activitiy>
Äppler trinken</Activitiy><Comment> Pit hatte coole Sonnenbrille an!</Comment></Date>
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Business Informatics 2 (PWIN) SS 2011, Chair of Mobile Business & Multilateral Security 9
Agenda
Exercise 1: Repetition XML (Mentorium)
Exercise 2: Well-formed XML Documents
Exercise 3: Validated XML Documents
Exercise 4: ER-Model
Exercise 5: Repetition SQL (Mentorium)
Exercise 6: SQL Statements
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Business Informatics 2 (PWIN) SS 2011, Chair of Mobile Business & Multilateral Security 10
InstantONS® has bought a competitor and wants to integrate his data into its own database. Unfortunately the data is structured differently.
Validate the following XML document extracted from the competitors database against the DTD of InstantONS®. If there are mismatches, adapt the DTD so the new data can be integrated without losses.
Exercise 3: Validated XML Documents
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Exercise 3: Validated XML Documents
<Date> … (gekürzt)<People>
Jenny23</People><Activity>
Äppler trinken</Activity><Success> <Compliment>ja</Compliment> <Invitation>nein</Invitation> <Newdate>nein</Newdate></Success><Comment> Pit hatte coole Sonnenbrille an!</Comment>
<?xml version="1.0"?>
<!DOCTYPE Date [<!ELEMENT Date (Place,Time,Meeting_Point,People+, Activity,Comment)>
<!ELEMENT Place (#PCDATA)> <!ELEMENT Time (#PCDATA)> <!ELEMENT Meeting_Point (#PCDATA)> <!ELEMENT People (#PCDATA)> <!ELEMENT Activity (#PCDATA)> <!ELEMENT Comment (#PCDATA)>]>
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Exercise 3: Validated XML Documents
(Solution)
12
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Agenda
Exercise 1: Repetition XML (Mentorium)
Exercise 2: Well-formed XML Documents
Exercise 3: Validated XML Documents
Exercise 4: ER-Model
Exercise 5: Repetition SQL (Mentorium)
Exercise 6: SQL Statements
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Business Informatics 2 (PWIN) SS 2011, Chair of Mobile Business & Multilateral Security 14
Exercise 4: ER-Model
Create an ER-Model of the InstantONS® system with the help of the following information:
Use the following entities for your model: User InstantONS Date (when, where, who, how often …), Event (cinema, restaurant, …) Eigenschaft (User profile, e.g. age) Meeting Point(Location for the date)
Identify and mark the primary key for each entity and avoid as far as possible artificial keys (e.g. ID).
Define the Cardinalities, using the 1:n notation. Make explicitly use of weak entities.
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Exercise 4: ER-Model(6)
InstantONS® System
1. Users register at InstantONS®. Thereby, they receive their pseudonyms and submit their personal profile information. Subsequently, InstantONS® attempts to certify the profile attributes of the users.
2. In order to start searching for a date, users have to activate the InstantONS® app on their mobile device.3. InstantONS® attempts to find other InstantONS® users in close proximity who are also currently looking for a
date.4. InstantONS® matches the personal proinforms the corresponding users by presenting them with a list of
matching pseudonyms. 5. InstantONS® enables matching users to communicate with each other using text messages, chat or voice. 6. If users want to arrange a meeting, InstantONS® suggests a list of appropriate meeting points based on the
personal interests of the corresponding users as well as their current geographic location. Then, InstantONS®
navigates the users to their meeting point. 7. After the date, the users can rate their files of all users in close proximity with each other.8. If there is a match, InstantONS® date on the InstantONS® app. This rating is used to improve their next date
matching process.
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Exercise 4: ER-Model(7)
Define entities
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Exercise 4: ER-Model(8)
Define relationships between the entities
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Exercise 4: ER-Model(9)
Define weak entities
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Exercise 4: ER-Model(10)
Define Cardinalities
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Exercise 4: ER-Model(11)
Define attributes
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Exercise 4: ER-Model(12)
Define attributes
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Agenda
Exercise 1: Repetition XML (Mentorium)
Exercise 2: Well-formed XML Documents
Exercise 3: Validated XML Documents
Exercise 4: ER-Model
Exercise 5: Repetition SQL (Mentorium)
Exercise 6: SQL Statements
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Business Informatics 2 (PWIN) SS 2011, Chair of Mobile Business & Multilateral Security 23
Exercise 5: Repetition SQL (Mentorium)
branch_namebranch_city
assets
Brighton Brooklyn7100000.00
Downtown Brooklyn9000000.00
Mianus Horseneck400000.00
North Town Rye3700000.00
Perryridge Horseneck1700000.00
Pownal Bennington300000.00
Redwood Palo Alto2100000.00
Round Hill Horseneck8000000.00
customer_name
customer_street
customer_city
Adams Spring PittsfieldBrooks Senator BrooklynCurry North RyeGlenn Sand Hill WoodsideGreen Walnut StamfordHayes Main HarrisonJackson University Salt LakeJohnson Alma Palo AltoJones Main HarrisonLindsay Park PittsfieldSmith Main RyeTurner Putnam StamfordWilliams Nassau Princeton
• The database Fortune Bank consists of four tables:Database: Fortune_Bank
Table: branch Table: customer
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Business Informatics 2 (PWIN) SS 2011, Chair of Mobile Business & Multilateral Security 24
Exercise 5: Repetition SQL (Mentorium)
loan_number
branch_name
amount
L-11 Round Hill 900.00
L-14 Downtown 1500.00
L-15 Perryridge 1500.00
L-16 Perryridge 1300.00
L-17 Downtown 1000.00
L-23 Redwood 2000.00
L-93 Mianus 500.00
customer_name loan_numberAdams L-16Curry L-93Hayes L-15Jackson L-14Jones L-17Smith L-11Smith L-23Williams L-17
• The database Fortune Bank consists of fourtables:Database: Fortune_Bank
Table: loan Table: borrower
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Exercise 5: Repetition SQL (Mentorium)
Write the appropriate SQL statements to answer the following questions and draw table which will be returned as a result.
a) How many borrowers are serviced by the branch “Downtown” and live in Princeton?
b) How many loans were granted exceeding $1000 ?c) Insert a new loan in the table “loan”.d) Delete the previously inserted entry from the table “loan”.
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a) How many borrowers are serviced by the branch “Downtown” and live in Princeton?
Exercise 5a)
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b) How many loans were granted exceeding 1000$ ?
Exercise 5b)
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c) Insert a new loan in the table “loan”.
Exercise 5c)
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d) Delete the previously inserted entry from the table “loan”.
Exercise 5d)
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Agenda
Exercise 1: Repetition XML (Mentorium)
Exercise 2: Well-formed XML Documents
Exercise 3: Validated XML Documents
Exercise 4: ER-Model
Exercise 5: Repetition SQL (Mentorium)
Exercise 6: SQL Statements
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Business Informatics 2 (PWIN) SS 2011, Chair of Mobile Business & Multilateral Security 31
Exercise 6: SQL
ID CustomerID Username Gender Birthdate Dateofregistration Lastlogin
1 2015452 terry24 m 1983-02-19 2006-01-01 2007-01-24
2 2017647 bob34 m 1973-03-28 2006-05-01 2007-01-24
3 2012470 chuck_norris m 1978-01-12 2006-08-17 2007-01-24
4 2097742 anspruchsvoll f 1979-06-25 2006-08-19 2007-01-23
5 2057454 wonne f 1975-09-27 2006-08-15 2007-01-09
6 2064719 hasi1979 f 1979-01-15 2006-07-16 2007-01-10
7 2142441 kussecht f 1978-05-12 2005-05-14 2007-01-13
8 2145714 nightmoon f 1975-05-21 2005-12-03 2007-01-14
9 2197654 schubby m 1975-05-26 2005-12-01 2007-01-24
10 2154757 selin28 f 1979-03-09 2005-12-24 2007-01-02
11 2164574 urmel31 m 1976-05-02 2007-01-01 2007-01-23
12 2113335 hexchen f 1971-02-15 2005-07-31 2007-01-19
13 2124574 sternschnuppe f 1972-06-06 2007-01-09 2007-01-20
14 2247577 sommergefluester f 1975-08-11 2005-04-19 2007-01-17
The database InstantONS® consists of two tables:Database: InstantonsTable: Customer_data
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ID CustomerID Size Weight Haircolor Familystatus Kids Fitness Hobby1 Hobby2 Hobby3
1 2015452 1.85 65.0 blond single 1 topfit Music Jogging Music
2 2017647 1.70 62.5 black single 0 normal Hockey Cycling Swimming
3 2012470 1.52 60.0 brown single 0 unfit Video games Museums Watching TV
4 2097742 1.65 59.8 brown divorced 2 unfit Theater Watching TV Cooking
5 2057454 1.63 72.0 black single 1 unfit Video games Cooking Hockey
6 2064719 1.54 48.0 blond single 0 normal Swimming Cycling Theater
7 2142441 1.62 51.2 blond divorced 0 topfit Jogging Swimming Video games
8 2145714 1.67 60.2 read single 2 topfit Cycling Music Jogging
9 2197654 1.69 59.4 black single 0 normal Video games Theater Music
10 2154757 1.71 62.5 black single 0 normal Swimming Theater Museums
11 2164574 1.68 59.5 black divorced 1 topfit Cycling Jogging Swimming
12 2113335 1.75 65.3 read single 0 normal Museums Cycling Swimming
13 2124574 1.78 80.5 blond single 0 unfit Watching TV Hockey Music
14 2247577 1.84 72.5 blond single 0 unfit Watching TV Video games Theater
Tabelle: Customer_interests
Exercise 6: SQL
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a) How many customers are stored in the table „Customer_data“?
Exercise 6a)
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Exercise 6b)
b) What is the average weight over all InstantONS® users?
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Exercise 6c)
c) What is the weight of the heaviest customer?
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Exercise 6d)
d) How many people were logged in per day?
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Exercise 6e)
e) How many male (female) users do exist in InstantONS®?
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Exercise 6f)
f) Display the Usernames of all users born in 1975.
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Exercise 6g)
g) Display the “Username“ and “Birthdate” of all users, sorted descending.
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Exercise 6h)
h) How many users are “topfit“?
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Exercise 6i)
i) How many users are “unfit“?
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Exercise 6j) Alternative 1
j) Display the “Username”, “Gender” and the first two hobbies of each user.
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Exercise 6j) Alternative 2
j) ) Display the “Username”, “Gender” and the first two hobbies of each user.
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Exercise 6k) Alternative 1
k) How many users are female and are playing „Video games“ as first or second hobby?
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Exercise 6k) Alternative 2
k) How many users are female and are playing “Video games“ as first or second hobby?
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Exercise 6l)
l) How many users are “single“, but do have kids?
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Exercise 6m)
m) Display the “Username”, “Gender”, “Size” and the according hobbies of each user.
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Exercise 6m) Alternative 1
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Exercise 6m) Alternative 2
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Exercise 6n)
n) How many users registered for InstantONS® in 2006?
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Exercise 6o) Alternative 1
o) Display the “Username”, “Haircolor” and the first hobby of all users.
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Exercise 6o) Alternative 2
o) Display the “Username”, “Haircolor” and the first hobby of all users.
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Exercise 6p)
p) Insert a data record into the table “Customer_data“ and display it with all attributes.
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Exercise 6q)
q) Insert a data record into the table “Customer_data“ and display it with “CustomerID” and “Hobby2” only.
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Exercise 6r)
r) Update the “Weight” of the user with the CustomerID „2057454“ to 62 kilograms.
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Exercise 6s)
s) Delete the entry inserted in Exercise p).
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Exercise 6t)
u) Delete the whole table „Customer_interests“.
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Exercise 6v)
v) Delete the whole database.
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Business Informatics 2 (PWIN) SS 2011, Chair of Mobile Business & Multilateral Security 59
Questions
Open Questions?