EMPLOYER(ECode, EName, Address) Ecode Ename EAddress E001 АВС Chennai E002 DEF Mumbai E003 GHI Kolkatta DWARF(DwarthName. Age, HatColour. Job, ECode) Dwarf Age HatCol Job Ecode Name MINI 22 RED J1 E001 Mary 35 Red J1 E002 Annie 45 Green J2 E001 Swapna 40 Blue J3 E001 Convert the following into SQL and Relational algebra expression f A. List the Dwarfname, Age and Hatcolor from Dwarf table B. Display the average age of the dwarf

Computer Networking: A Top-Down Approach (7th Edition)
7th Edition
ISBN:9780133594140
Author:James Kurose, Keith Ross
Publisher:James Kurose, Keith Ross
Chapter1: Computer Networks And The Internet
Section: Chapter Questions
Problem R1RQ: What is the difference between a host and an end system? List several different types of end...
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Question
EMPLOYER(ECode, EName, Address)
Ecode
Ename
EAddress
E001
АВС
Chennai
E002
DEF
Mumbai
E003
GHI
Kolkatta
DWARF(DwarthName. Age, HatColour. Job,
ECode)
Dwarf
Age
HatCol Job
Ecode
Same
MINI
RED
JI
E001
Mary
35
Red
J1
E002
Annie
45
Green
J2
E001
Swapna 40
Biue
J3
E001
Convert the following into SQL and Relational algebra expression fo
А.
List the Dwarfname, Age and Hatcolor from Dwarf table
4.
В.
Display the average age of the dwarf
22
Transcribed Image Text:EMPLOYER(ECode, EName, Address) Ecode Ename EAddress E001 АВС Chennai E002 DEF Mumbai E003 GHI Kolkatta DWARF(DwarthName. Age, HatColour. Job, ECode) Dwarf Age HatCol Job Ecode Same MINI RED JI E001 Mary 35 Red J1 E002 Annie 45 Green J2 E001 Swapna 40 Biue J3 E001 Convert the following into SQL and Relational algebra expression fo А. List the Dwarfname, Age and Hatcolor from Dwarf table 4. В. Display the average age of the dwarf 22
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