I need answer quickly Forthe following query plan and statistics, determine the expected cardinality of the query atthe points indicated.Statistics:T(Patient)10,000,000B (Patient)100,000V(Patient, ZipCode)T(Visits)=100,000,000B(Visits)= 200,000V(Visits, CID) = 5,000V(C, PID)=20P.PatientID = V.PIDAσV.CID 10101Visits V==90,000σP.ZipCode = 98177Patient PBC Provide the expected cardinality of the output of operator A. You are encouraged to show yourwork and/or reasoning.Provide the expected cardinality of the output of operator B. You are encouraged to show yourwork and/or reasoning.

Answer: 1). The cardinality of A will be one because the Pincode is a primary keyi.e; it is unique…

Provide the expected cardinality of the output of operator A. You are encouraged to show your work and/or reasoning. Provide the expected cardinality of the output of operator B. You are encouraged to show your work and/or reasoning.

Provide the expected cardinality of the output of operator A. You are encouraged to show your work and/or reasoning. Provide the expected cardinality of the output of operator B. You are encouraged to show your work and/or reasoning.

Database Systems: Design, Implementation, & Management

11th Edition

ISBN:9781285196145

Author:Steven, Steven Morris, Carlos Coronel, Carlos, Coronel, Carlos; Morris, Carlos Coronel and Steven Morris, Carlos Coronel; Steven Morris, Steven Morris; Carlos Coronel

Publisher:Steven, Steven Morris, Carlos Coronel, Carlos, Coronel, Carlos; Morris, Carlos Coronel and Steven Morris, Carlos Coronel; Steven Morris, Steven Morris; Carlos Coronel

Chapter11: Database Performance Tuning And Query Optimization

Section: Chapter Questions

Problem 24P: Problems 2224 are based on the following query: SELECT P_CODE, P_DESCRIPT, P_PRICE, P.V_CODE,...

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Concept explainers

Bare bones programming language

Bare bones programming language is a low-level programming language that gives a detailed stepwise description of a program. It has a tight program design and in-depth understanding of the toolchain. It is based on the target environment and is used for safe coding practices. C programming language is a type of bare bones programming language.

Question

I need answer quickly

For
the following query plan and statistics, determine the expected cardinality of the query at
the points indicated.
Statistics:
T(Patient)
10,000,000
B (Patient)
100,000
V(Patient, ZipCode)
T(Visits)
=
100,000,000
B(Visits)
= 200,000
V(Visits, CID) = 5,000
V(C, PID)
=
20
P.PatientID = V.PID
A
σ
V.CID 10101
Visits V
=
=
90,000
σ
P.ZipCode = 98177
Patient P
B
C

Provide the expected cardinality of the output of operator A. You are encouraged to show your
work and/or reasoning.
Provide the expected cardinality of the output of operator B. You are encouraged to show your
work and/or reasoning.

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