1. Shown below is the relational database schema for a database which contains details regarding bus journeys from Tronoh to various destinations: BusOperator (opCode, opName) Journey(QpCode,GestinationCode price) Destination (destinationCode, destinationName, distance) a. Formulate the following queries using relational algebra: . Get the name of bus operators (e.g., Plusliner, Sri Maju etc.) that provide journeys which are priced at more than RM50.00. (3 marks ii. List the names of a destinations along with their prices provided by Plusliner. 3
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