Consider an sql statement select id forename surname from, Computer Engineering

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Consider an sql statement select id forename surname from

Question: Consider an SQL statement: SELECT id, forename, surname FROM authors WHERE forename = ‘john' AND surname = ‘smith'

a. What is this statement intended to do?

b. Assume that the forename and surname fields are being gathered from user supplied input, and suppose the user responds with: Forename: john Surname: smith What will be the effect?

c. Now suppose the user responds with: Forename: jo'; drop table authors-- Surname: smith What will be the effect?

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