Microsoft Word - CW-220CT-2 Faculty of Engineering, Environment and Computing EEC 220CT Assignment Brief 2018/19 Module Title Data and Information Retrieval individual Cohort (Sep) Module Code 220CT...

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Answered Same DayNov 11, 2020

Answer To: Microsoft Word - CW-220CT-2 Faculty of Engineering, Environment and Computing EEC 220CT Assignment...

Ankit answered on Nov 19 2020
135 Votes
Student_Name
                    Student_Id    
                    Title of assignment
Part 1: Normalisation
1. The table is not normalised because neither Mission No. nor Agenc
y No. is the key (both have duplicates) so the key must be one of those (probably id) together with the equipment id. The other one (Equipment name, Qty and Equipment weight) then doesn't depend on that key, but just on id.
2. Functional dependency of tables are listed below:
Equipment_id equipment,qty,equipment_weight
Mission_no-agency_no,mission_date
Agency_no-Lead_agency,country
Equipment_id-Mission_no
3. 1-3 Normal forms
1 NF
· Each table cell should contain a single value.
· Data must not contain repeating groups.
    Mission No.
    Agency No.
    Lead Agency
    Country
    Mission Date
    ISS2237
    178
    JAXA
    Japan
    14/12/2016
    ISS3664
    526
    ESA
    EU
    16/01/2017
    ISS2356
    167
    NASA
    USA
    12/042017
    ISS1234
    032
    Roskosmos
    Russia
    16/04/218
    Mission No.
    Equipment
    Qty
    Equipment Weight
    ISS2237
    Potable water dispenser
    2
    100kg
    ISS2237
    Flexible air duct
    6
    0.5kg
    ISS2237
    Small storage rack
    4
    2kg
    ISS3664
    Bio Filter
    6
    0.20kg
    ISS2356
    Small storage rack
    3
    2kg
    ISS2356
    Battery pack
    2
    5Kg
    ISS2356
    Urine transfer tubing
    2
    1.5kg
    ISS2356
    O2 scrubber
    1
    50kg
    ISS1234
    Small storage rack
    1
    2kg
    ISS1234
    Flexible air duct
    2
    0.5kg
2 NF
“The data is said to be in second normalized form If,
1. It is in First normal form
2. There should...
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