- Why is data recovery important?
- What is crash recovery in transport layer?
- What is disaster response and recovery?
- What is a disaster recovery plan what are the key features?
- What are the different phases of transaction in SQL?
- What are the steps in query processing?
- What are five major elements of a typical disaster recovery plan?
- Which are types of recovery control techniques?
- What are the 3 normal reactions to disasters?
- What makes a good disaster recovery plan?
- What should disaster recovery plan include?
- What are the three phases of recovery?
- What are the stages of disaster recovery when responding to large scale crises?
- What is a crash recovery?
- What are the two types of Serializability?
- What are the after triggers?
- What are the five phases of disaster management?
Why is data recovery important?
You need a data recovery solution if you experience inaccessibility of files and folders, unrecognized format, virus attacks, accidental deletions, permanent deletion of files, inaccessible partitions, corrupt documents, unexpected system shutdowns, error messages while opening a file and there are endless reasons due ….
What is crash recovery in transport layer?
Crash Recovery TCP is very reliable protocol. It provides sequence number to each of byte sent in segment. … When a TCP Server crashes mid-way communication and re-starts its process it sends TPDU broadcast to all its hosts.
What is disaster response and recovery?
The disaster recovery process focuses on restoring, redeveloping, and revitalizing communities impacted by a disaster. …
What is a disaster recovery plan what are the key features?
A disaster recovery (DR) plan is a formal document created by an organization that contains detailed instructions on how to respond to unplanned incidents such as natural disasters, power outages, cyber attacks and any other disruptive events.
What are the different phases of transaction in SQL?
Explain the phases a transaction has to undergo. – Active state: This phase is divided into two states: – Initial phase: This phase is achieved when the transaction starts. – Partially Committed phase: This is achieved when the transactions final statement has been executed.
What are the steps in query processing?
Eno AND DOP > 10;Input: A query written in SQL is given as input to the query processor. … Step 1: Parsing. … Step 2: Translation. … Step 3: Optimizer. … Step 4: Execution Plan. … Step 5: Evaluation. … Output:Sep 25, 2014
What are five major elements of a typical disaster recovery plan?
5 Elements of a Disaster Recovery Plan – Is Your Business…Create a disaster recovery team. … Identify and assess disaster risks. … Determine critical applications, documents, and resources. … Determine critical applications, documents, and resources. … Specify backup and off-site storage procedures. … Specify backup and off-site storage procedures. … Test and maintain the DRP.
Which are types of recovery control techniques?
There are two major techniques for recovery from non-catastrophic transaction failures: deferred updates and immediate updates. Immediate update – In the immediate update, the database may be updated by some operations of a transaction before the transaction reaches its commit point.
What are the 3 normal reactions to disasters?
Physical problemsEasily startled by noises.General agitation and muscle tension.Palpitations, trembling or sweating.Breathing difficulties.Nausea, diarrhoea or constipation.Many other physical signs and symptoms.Nov 16, 2016
What makes a good disaster recovery plan?
A disaster recovery plan checklist includes identifying critical IT systems and networks, prioritizing the RTO, and outlining the steps needed to restart, reconfigure and recover systems and networks. The plan should at least minimize any negative effect on business operations.
What should disaster recovery plan include?
7 Things Every Disaster Recovery Plan Should IncludeInventory of Assets and Services. … Data and Backups. … Determine Possible Disasters. … Put Together a Disaster Recovery Team. … Select an Offsite Location. … Communication is Key. … Testing and Updates.Jun 18, 2018
What are the three phases of recovery?
Three phases of recovery : the analysis phase, the redo phase, and finally the undo phase [closed] Closed.
What are the stages of disaster recovery when responding to large scale crises?
Emergency managers think of disasters as recurring events with four phases: Mitigation, Preparedness, Response, and Recovery.
What is a crash recovery?
Crash recovery is the process by which the database is moved back to a consistent and usable state. This is done by rolling back incomplete transactions and completing committed transactions that were still in memory when the crash occurred (Figure 1). … A hardware failure such as memory, disk, CPU, or network failure.
What are the two types of Serializability?
Serializability in DBMS identifies the non-serial schedules that will maintain the database consistency. Conflict Serializability & View Serializability are the two types of Serializability in DBMS.
What are the after triggers?
What are the after triggers? Explanation: AFTER TRIGGERS can be classified further into three types as: AFTER INSERT Trigger, AFTER UPDATE Trigger, AFTER DELETE Trigger. Explanation: Example : declare @empid int; where empid is the variable.
What are the five phases of disaster management?
Prevention, mitigation, preparedness, response and recovery are the five steps of Emergency Management.Prevention. Actions taken to avoid an incident. … Mitigation. … Preparedness. … Response. … Recovery.