Which relational algebra correctly express the following?
List all managerID and manageName whose workExperience is more than 5 years.

Question

Which relational algebra correctly express the following? 
 List all managerID and manageName whose workExperience is more than 5 years.

Accepted Answer

π   managerID, managerName (   σ   workExprience > 5) (MANAGER))

Answer

σ   managerID, managerName (   π   workExprience = 5) (MANAGER))

Answer

σ   managerID, managerName (   π   workExprience > 5) (MANAGER))

Answer

π   managerID, managerName (   σ   workExprience = 5) (MANAGER))

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