1) How many serial schedules exist for the three transactions in the following figure? What are they? What is the total number of possible schedules? Transaction T₁ read_item(X); write_item(X); read_item(Y); write_item(Y); Transaction T₂ read_item(Z); read_item(Y); write_item(Y); read_item(X); write_item(X); Transaction T3 read_item(Y); read_item(Z); write_item(Y); write_item(Z);

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A: Given Data nested transactions And usages of locks in nested transaction

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A: Answer: I have given answered in the handwritten format

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A: According to the question below the solution:

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A:

Q: e two st

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Q: When is a transaction rolled back?

A: Please upvote me please . I need it badly. Please.       >>> A transaction can be defined…

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A: Data Base: In the context of database transactions, a database transaction is a unit of work done…

Q: model

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Q: Q5/ What is the use of nonce in transactions with the structure of transactions in question 1?…

A: Nonce is a unique and arbitrary number which is used to prevent the reply attacks. This is encrypted…

Q: What exactly is settle time?

A:

Q: In a dimensional model, how is a transaction identifier commonly represented?

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Q: What is a "nested transaction" and how does it differ from a standard transaction?

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Q: In the context of a dimensional model, how is a transaction identifier commonly expressed?

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Q: in transaction mangement .a transaction is a logical unit of work explain

A: Answer to the above question is in step2.

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A: Answer: I have given answer in the brief explanation.

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