database managment system

Dear student! Please answer the following assignment 1. Explain the distinction between the serial execution and concurrently execution by example? 2. During its execution, a transaction passes through several states, until it finally commits or Abort. List all possible sequences of states through which a transaction may pass for the following transactions: A) T1 1. Read (F) 2. Read (M) 3. D:=F+N Fail 4. Write (D, 5. Write (D/2) B) 1. Read (F) 2. Read (M) 3. D:=F+M/3 4. Write (D) 5. Write Fail 6. Commit C) T3 1. Read (F) 2. Read (M) 3. D:=F+M/3 4. Write (D) 5. Write (D/2) 6. Comp Fail