Determine whether the below schedule is serializable or not with suitable justifications. Draw the precedence graph as well. ii. Consider the following relations employees (empld, emp_name, Cid, dept_name, designation, salary); company (Cid, company name, city); managers (managerld, mname, Cid, no-of-indoor-projects, outdoor-project-area) Write relational algebraic expression for the following queries: a. List the salary of employees from 'Accounts department order by employee name in ascending order. b. Display the manger names along with their company name whose outdoor-project area is 'Urban'

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
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¡.Determine whether the below schedule is serializable or not with suitable justifications. Draw the precedence graph as well. ii. Consider the following relations employees (empld, emp_name, Cid, dept_name, designation, salary); company (Cid, company name, city); managers (managerld, mname, Cid, no-of-indoor-projects, outdoor-project-area) Write relational algebraic expression for the following queries: a. List the salary of employees from 'Accounts department order by employee name in ascending order. b. Display the manger names along with their company name whose outdoor-project area is 'Urban'.
hether the below s
T1
read(U)
U: U+3
T2
T3
write(U)
commit
read(U)
U: U*7
write(U)
commit
read(B)
B:=B-15
write(B)
commit
read(B)
B:=B 2
write(B)
commit
read(V)
V:=V*5
write(V)
commit
read(V)
V:=V-5
write(V)
commit
Transcribed Image Text:hether the below s T1 read(U) U: U+3 T2 T3 write(U) commit read(U) U: U*7 write(U) commit read(B) B:=B-15 write(B) commit read(B) B:=B 2 write(B) commit read(V) V:=V*5 write(V) commit read(V) V:=V-5 write(V) commit
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