Can I have expaination for 4. Part 1: Use the following schema to answer the questions 1-3 below. This schema refers to a gamingorganization. There can be any number of players per game. Each game and each tournament has onewinner; if the game or tournament is ongoing, the winner is null. The gameWinner andtournamentWinner attributes are foreign keys for memberID.Member(memberID, member Name.joinDate)GamelgamelD, gameType, gameDate, gameWinner, tournamentName)-MemberGamel(memberID, gamelD)-Tournament(tournamentName, tournamentWinner)ww 2. Write a description of what each of the following queries does:a. SELECT *FROM Member LEFT OUTER JOIN Tournament ON memberID = tournamentWinner;e%3Db. UPDATE MemberSET memberName = "Devon Chance""WHERE memberID = 100154;c. SELECT memberID, gamelDFROM Member NATURAL JOIN MemberGame NATURAL JOIN GameWHERE joinDate < "2021-01-01" AND gameDate >="2021-01-01"3. Write two functionally different relational algebra statements equivalent to the query in 2c.

The question is related to the topic " Structured Query Language and relational algebra" from the…

Write a description of what each of the following queries does: a. SELECT ** FROM Member LEFT OUTER JOIN Tournament ON memberID = tournamentWinner; b. UPDATE Member SET member Name = "Devon Chance" WHERE memberID = 100154; c. SELECT memberID, gamelD FROM Member NATURAL JOIN MemberGame NATURAL JOIN Game WHERE joinDate < "2021-01-01" AND gameDate >= "2021-01-01"" 3. Write two functionally different relational algebra statements equivalent to the query in 2c.

Write a description of what each of the following queries does: a. SELECT ** FROM Member LEFT OUTER JOIN Tournament ON memberID = tournamentWinner; b. UPDATE Member SET member Name = "Devon Chance" WHERE memberID = 100154; c. SELECT memberID, gamelD FROM Member NATURAL JOIN MemberGame NATURAL JOIN Game WHERE joinDate < "2021-01-01" AND gameDate >= "2021-01-01"" 3. Write two functionally different relational algebra statements equivalent to the query in 2c.

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

Problem 1PE

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