Time T1 T2 T1 Begin_transaction Begin_transaction Avg = 0 T2 тз | Read(b) T3 Read (a) T4 b = b-10 Read (b) T5 Write (b) Т commit T7 Avg = (a+b)/2 T8 Commit

Q: A new timestamp is assigned to a transaction that is rolled back in compliance with the timestamp…

A: Given: This is due to the fact that another transaction with a timestamp that is larger than TS(T),…

Q: CPU architecture: Intel Xeon with 64 bit cores Filesystem: Ext4 with 4KB (4096 byte) blocks The…

A: Answer:-   1 calculate the size of the internal nodes M for           our B-tree       Ans…

Q: A __________ checkpoint is a checkpoint where transactions are allowed to perform updates even while…

A: The answer is given below.

Q: A transaction commits as soon as its commit log record is written to stable storage at the primary…

A: A transaction commits as soon as its commit log record is written to stable storage at the primary…

Q: 71. There are special redo-only log records generated during transaction rollback, called _________…

A: There are special redo-only log records generated during transaction rollback, called Compensation…

Q: Fill in the blank: A transaction is made to wait until all ________ locks held on the item are…

A: Question. Fill in the blank: A transaction is made to wait until all ________ locks held on the…

Q: When a transaction is rolled back in accordance with timestamp ordering, a new timestamp is assigned…

A: To be determine: When a transaction is rolled back in accordance with timestamp ordering, a new…

Q: Even if a transaction is rolled back, the disc space allotted to the file should not be freed.…

A: step: 1 of 2 The ARIES recovery scheme flushes pages continuously without waiting for the…

Q: Assume that transaction A holds a shared lock on R. Iftransaction B also requests for a shared lock…

A: When a Transaction read data without making any changes or modification on the data then the…

Q: In the Schedule below determine the undo and redo and rollback transaction LSN Log 00 UpdateT1…

A: UNDO:    UNDO records can be put away in either rollback fragments or fix data spaces.  During data…

Q: When combining data from four data sources, you notice that timestamp data about transactions are…

A: When combining data from four data sources, you notice that timestamp data about transactions are…

Q: the change-cipher-spec transaction that is used by TLS.

A: MAC serves the following purposes during the TLS change cypher spec exchange: A key exchange…

Q: Locks on buffer blocks are unrelated to locks used for concurrency-control of transactions, and…

A: The answer is given below.

Q: __________ rollback requires the system to maintain additional information about the state of all…

A: Exрlаnаtiоn:  In  tоtаl  rоllbасk  аbоrt  the  trаnsасtiоn  аnd  then  restаrt  it.

Q: (Transaction Management) Make a solution to handle two transactions where the initial BalanceX is…

A:

Q: not a desirable property of a transaction

A: not a desirable property of a transaction

Q: If log contains record but does not contain the record either , then the Transaction Ti needs to…

A: Answer:(b) Undo

Q: 5. If a transaction does not modify the database until it has committed, it is said to use the…

A: Please find the answer to the above question below:

Q: A transaction completes its execution is said to be a. Saved b. Loaded c. Rolled d. Committed

A: A transaction the completes its execution is said to be Committed. Committing a transaction means…

Q: 8. In the __________ phase, the system replays updates of all transactions by scanning the log…

A: Given that, 8. In the __________ phase, the system replays updates of all transactions by scanning…

Q: Which of the following is not a state in transaction ? a. Active b. Terminated c. Aborted d.…

A: Transactions have five state- Active Partially committed Abort Failed Committed

Q: A new timestamp is assigned to a transaction if it is rolled back in timestamp order. Why can't it…

A: Timestamp Timestamp is a unique identifier created by the DBMS to identify the relative starting…

Q: . create a repository in GitHub.

A: Actually, given question regarding GitHub.

Q: Write an Ansible rule to alert on binaries being executed from the "/tmp" directory. Set the log tag…

A: To install it, use: ansible-galaxy collection install community.general. To use it in a playbook,…

Q: The "".qt"" directory can be read/written/executed by root user while other users can write/execute…

A: I have given an answer in step 2.

Q: In the Schedule below determine the undo and redo and rollback transaction LSN Log UpdateT1 writes…

A: Undo and rollback  are transaction T3,T1,while redo is T2,T4.

Q: T1 T2 T3 R(X) R(X) W(X) R(Y) W(Y) R(X) Commit Commit Commit The schedule above is for the…

A: No need to recover a transaction if it is already committed

Q: 1 a-1 for i in (Datai.head(200) and Datal.tail(200)): if 1(-2] not in a: a. append(i[-2]) b.…

A: It is defined as an interpreted, object-oriented, high-level programming language with dynamic…

Q: Consider the log in Figure 19.5. Suppose there is a crash just before the logrecord<T0…

A: The undo and redo operations Undo operation examines a transaction to find log record write_item(T,…

Q: What are the several stages that make up a SET Transaction?

A: SET, which stands for "secure electronic transaction," is a system that protects the significant…

Q: Consider the schedule below. Here, R(*) and W(*) stand for 'Read' and Write', respectively. T1, T2,…

A: Given table contains, five transactions that are T1, T2, T3, T4 and T5. These transactions contains…

Q: 87. The property of transaction that persists all the crashes is a. Atomicity b. Durability c.…

A: b) Durability

Q: Q-1) A trigger is associated with the Action(s): c) Delete d) Update a) INSERT b) All of the above…

A: Question 1: Triggers are associated with the database DML actions that are: INSERT, UPDATE, and…

Q: 68. State true or false: Transactions can only run serially a. True b. False c. May be d. Can't say

A: Here is the solution which is mentioned below:

Q: 75. ______________ rolls back all transactions that were incomplete at the time of crash. a.…

A: Here is the solution which is mentioned below:

Q: Question 3: Transactions and Loggings Assume there are three transactions, T1, T2 and T3. The…

A: Note : As per guidelines we are authorized to answer 3 sub parts when multiple sub parts question is…

Q: ransaction Ti requests a data item currently held by Tj , Ti is allowed to wait only if it has a…

A: the answer is an  wound wait

Q: When a transaction is rolled-back under timestamp ordering, it is assigned a new timestamp. Why can…

A: Explanation: Timestamp ordering protocol uses a unique timestamp for each transaction. When a…

Q: Consider the schedule below. Here, R(*) and W(*) stand for 'Read' and 'Write', respectively. T1, T2,…

A: Solution:-

Q: 42. We say that a transaction has been ________ when its commit log record has been output to stable…

A: Please find the answer to the above question below:

Q: The state of the data accessed by an aborted transaction must be restored to what it was just before…

A: Question. The state of the data accessed by an aborted transaction must be restored to what it was…

Q: When a transaction is rolled back in timestamp order, it gets a new timestamp. Why can't it just…

A: Introduction: In the timestamp ordering system, each transaction is identified by a unique…

Q: WWW BARO WW A transaction has the "isolation property if (a) brings the system from one valid state…

A: Given question are multiple choice selected question.

Q: lock should be obtained to prevent a concurrent transaction from executing a conflicting read,…

A: lock should be obtained to prevent a concurrent transaction from executing a conflicting read,…

Q: Refer to the sequence below. What is the isolation level of transaction E? session begins SET GLOBAL…

A: Please see the next step for solution:-

Q: 15. A transaction performs on the isolation level of the Read Uncommitted if : a. A dirty read…

A: Please find the answer to the above question below:

Q: . I and J are _________ if they are operations by different transactions on the same data item, and…

A: given data is I and J are _________ if they are operations by different transactions on the same…

Q: 132. A concurrency-control policy such as this one leads to ______ performance, since it forces…

A: Please find the answer to the above question below:

Types of database architectures

A Database Architecture represents the Database Management System’s (DBMS) design (schema). The DBMS architecture makes it easy to understand the components involved in the database system and their relations. The DBMS architecture may vary based on the system on which it runs. Some systems contain both client and server machines whereas some run only on a server machine. Based on the architecture, the system can be classified as centralized, decentralized, or hierarchical.