Consider the following schema: Person (pid integer, name: string), Observer (pid integer), Meteorologist (pid integer), Consumer (pid integer), Lives At (stretdddress string, cit string, state string, pid: integer,). Forecast (fid string, high integer, low: integer, fdate date, city string): Presents (pid integer, fld integer): Views (pid integer. fid integer): Records (pid integer, aid integer, method: string). This represents a subset of the schema that was used in Project 1. Select the valid Oracle SQL query to list the observers who recorded more than 5 observations For each observer you are to list the name of the observer, the pid value and the count of the number of observations SELEOT R.pid, P.name, COUNT (DISTINCT R.bid) FROM records R, Peraon P WHERE R.pid P.pid GROUP BY R.pid, P.name HAVING (COUNT (DISTINCT R.oid) > 5) SELECT R.pid, P.name, COUNT (DISTIN07 R.oid) FROM recorda R. Peracn P GROUP BY R. pid, P.name HAVING COUNT (R.oid)> 5 SELECT R.pid, P.name, COUNT (DISTinee R.oid) FROM records R, Ferson P WHERE R.pid P.pid AND COUNT (DISTINCT R.old> 5 GROUP BY R.pid, P.name Onone of these SELECT R.pd, P.nane. CONT IDISTIHCT R.DAd) TROM reCords R, Deraon F WHERE R.pid P.pid GROUP BY R.pid KAVING ICOUNT (DSTINCT R.oidi 5) Previous Page Neat Page Page 3 of 13
Consider the following schema: Person (pid integer, name: string), Observer (pid integer), Meteorologist (pid integer), Consumer (pid integer), Lives At (stretdddress string, cit string, state string, pid: integer,). Forecast (fid string, high integer, low: integer, fdate date, city string): Presents (pid integer, fld integer): Views (pid integer. fid integer): Records (pid integer, aid integer, method: string). This represents a subset of the schema that was used in Project 1. Select the valid Oracle SQL query to list the observers who recorded more than 5 observations For each observer you are to list the name of the observer, the pid value and the count of the number of observations SELEOT R.pid, P.name, COUNT (DISTINCT R.bid) FROM records R, Peraon P WHERE R.pid P.pid GROUP BY R.pid, P.name HAVING (COUNT (DISTINCT R.oid) > 5) SELECT R.pid, P.name, COUNT (DISTIN07 R.oid) FROM recorda R. Peracn P GROUP BY R. pid, P.name HAVING COUNT (R.oid)> 5 SELECT R.pid, P.name, COUNT (DISTinee R.oid) FROM records R, Ferson P WHERE R.pid P.pid AND COUNT (DISTINCT R.old> 5 GROUP BY R.pid, P.name Onone of these SELECT R.pd, P.nane. CONT IDISTIHCT R.DAd) TROM reCords R, Deraon F WHERE R.pid P.pid GROUP BY R.pid KAVING ICOUNT (DSTINCT R.oidi 5) Previous Page Neat Page Page 3 of 13
Database System Concepts
7th Edition
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Chapter1: Introduction
Section: Chapter Questions
Problem 1PE
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Question
Transcribed Image Text:Consider the following schema:
Person (pid integer, name: string);
Observer (pid integer),
Meteorologist (pid integer),
Consumer (pid integer),
Lives At (stregtdddress string, city string. ztate: string, pid. integer,):
Forecast (fid string, high: integer, low: integer, fdate, date, city. string):
Presents (pid integer, fid integer):
Views (pid integer, fid integer):
Records (nid integer, oid integer, method: string).
This represents a subset of the schema that was used in Project 1.
Select the valid Oracle SQL query to list the observers who recorded more than 5 observations. For each
observer you are to list the name of the observer, the pid value and the count of the number of observations
SELECT R.pid, P.name, COUNT (DISTINCT R.bid)
FROM records R, Peraon P
WHERE R.pid= P.pid
GROUP BY R.pid, P.name
HAVING (COUNT (DISTINCT R.oid) > 5)
SELECT R.Pid, P.name, COUNT (DISTINCT R.oid)
FROM records R, Person P
GROUP BY R.pid, P.name
HAVING COUNT (R.oid)> 5
SELECT R.pid, P.name, COUNT (DISTINCT R.oid)
FROM records R, Person
WHERE R.pid- P.pid AND COUNT (DISTINCT R.oia>5
GROUP BY R.pid, P.name
none of these
SELECT R.pid, P.name. COUNT (DISTINCT R.Did)
FROM records R, Person F
WHERE R.pid Pipid
GROUP BY Bpid
HAVING (COUNT (DESTINCT R.oid) > 5)
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