b. The first is how hot or busy your source database is. c. Integration Testing Finally, after all your preparations, thousands of things can go wrong during and after the migration. Data masking This section of the post will cover some of the specifics of migrating to AWS and what help is available, and help you ask the right questions about the benefits and limitations of your new environment. b. c. Data modeling & staging area architecture Yes, only in case of medium size projects where data objects are less than 30 Of course, your DBA will tell you that the world is going to end the moment SSH access is lost to the database box, but will it really? a. Migration time can be longer, and more memory will be required on your replication server. Yes What is the size of your database? d. no. Show Answer, 12) What is remediation process in data migration parlance? Some of them are easy to tune and take into consideration; others can be harder. Show Answer, 9) Challenge you will face while working with 3rd party managed legacy source system for For data migrations, we generally offer a fixed bid price; we have found that many business can be adverse to a Time and Materials arrangement, due to past experience with other service providers where the project exceeded both time and cost. b. d. None of the above b. Aligning your data extraction tasks as per their time window Show Answer, 20) Data migration is a Show Answer, 35) Which of the following can be used to hold the data extracted from disparate sources for cleansing/standardization? The first and very important tool is the documentation. a. Reconciliation reports In the context of the extract/transform/load (ETL) process, any data migration will involve at … Yes, only in cases where data upload is responsibility of client team People, Process and Technology Yes, as integration testing can be done on sample data Show Answer, 62) Which activity is generally covered during Mock runs At The Same Time As Systems Testing. This blog post discusses common migration problems that can occur when you move your database to the cloud. In addition, you can use a set of detailed playbooks. In the database migration service home page, click on Replication Instances. c. Cleanse on Target Cleanse in Staging /In-flight using code logic Thanks for reading! It should be done by developing customer programs during the project execution phase. Show Answer, 56) Identify the incorrect opportunity for Data Migration a. b. Cut-over planning The key to success, though, is to make your database migration project predictable. d. All of these Show Answer, 43) Cleansing of data by business users should be started only after build phase? Data in different format d. Building Migration components Data Transformation Data Cleansing 13. a. Talend AWS DMS has a feature called premigration validation that verifies types involved in the migration and warns you about the issues you might have with your data types. a. Laravel database migrations allow developers to quickly bootstrap, destroy, and recreate an application’s database, without the need to log into the database console or run any SQL queries.. 9. b. Legacy Administrator 98% d. Its always good to have latest production copy for testing the integration components d. None of the above You’ll also need information about the network setup your organization has with its cloud provider. If you don’t have them in you database, lucky you, but keep reading to understand how lucky you are. 2. The point is that somebody needs to prepare your schema to be applied in parts. c. Datatype Conversion For example, you might have an audit log table that is 97 percent of your database. Of course, you know how to set up supplemental logging and you remember most of the Oracle data types and how they map to the rest of the database engines. c. No, Functionality testing should be carried out only on system where data has been loaded as it will reduce risk of unforeseen issues during final cutover Click on Database migration service. Database migration is a type of migration where all the data in the database of an application is migrated to another database. d. None of these You have even more decisions if you are switching engines. There are a lot of questions you’ll want to ask to make sure this is done right. Show Answer, 54) Usually ownership of accuracy of data lies with a. Show Answer, 26) User acceptance testing typically occurs: c. OWB d. None of these Amazon RDS also offers a variety of managed high availability (HA) features. 2. d. 90% of masters and 90% transaction data Make sure that when you start to move data you know exactly how much of this pipe the migration is going to use, and that you are not taking down mission-critical workloads by kicking the tires migrating your test database. Database migration is a complex, multiphase process, which usually includes assessment, database schema conversion (if you are changing engines), script conversion, data migration, functional testing, performance tuning, and many other steps. Another important question that will affect your approach is this: Do you need your source database to remain available after the migration is done? Undertaking a Data Migration Takes Planning. Yes, only in cases where readymade data extract programs are available view answer dbv: DBVERIFY utility in oracle: view answer Physical Standby Database Creation in Oracle view answer; Working with AWR - Oracle 10g for Performance tuning in Oracle view answer Information Technology Later, when you migrate your data, verify that all your data looks correct on the other end before you shut down the power at your data center. In the last section, we will discuss some more detailed information related to an AWS migration. c. After Project Close Down Review. d. No, Functionality testing should be carried out only on system where data has been loaded as it helps in testing of configuration, developments and data at same time and hence reduces the effort of testing. 20. Transformation Rules document Explain with Code Example ? It can be done in cases where functionality of new module is not dependent on availability of recent data But there are also limitations. Unit Testing However, you can use the Migration Workbench to migrate from a supported source database to an Oracle9i or Oracle8i database, regardless of the operating system platform of either database. b. Summary Database migration projects can be hard, especially your first one, but the benefits of migrating your database to the cloud are significantly greater than the challenges migrations can present. a. Data Migration Interview Questions 1. Some apps need this access, but in most cases the sun will shine the day after your DBA loses database admin privileges, as it does for other customers. Learn about interview questions and interview process for 62 companies. Okay, suppose you’ve done some initial digging and now you have data about the size, schema, and tables of the database to migrate. If your nonprofit is considering a data migration in the near future, you can start planning now by asking some preliminary questions: What use cases and critical functionality do you need to preserve? a. Geography Show Answer, 36) Which of the following process can be part of data migration for analyzing the source data? 76 data migration interview questions. c. Products & Services Even if you are planning a homogenous migration, many tools won’t support all the data types involved. If the tables are partitioned, some native and AWS tools, such as AWS DMS, know how to use this and load data in parallel. b. - Trenovision, What is Insurance mean? Show Answer, 32) which of the following is a open source etl tool used for migration Don’t forget, your organization can have an awesome 10 GB direct pipe to your cloud provider, but that doesn’t mean it’s all yours. What source/target pairs does Azure Database Migration Servi… d. Golden Gate a. One-off activity triggered by business circumstances/upgrade circumstances a. People, Tool and Testing Cleanse in Source It will save you a lot of time and frustration during the migration. What compromises can you make to simplify the data migration? a. d. None Of The Above d. None of the above a. DM team in Dev environment Show Answer, 65) Which is generally an activity of Requirement & Data Quality Assessment Phase What do the transaction boundaries look like? In general, it’s always good to keep it simple—that is, move the data first, then transform, restructure, or rearchitect it. 100% b. c. At the end of Build phase d. None of these You can run it manually (From Visual Studio or Opening the executable file) or run it as a part of your release pipeline with the --nowait argument.. Before you run it for the first time make sure to drop the existing database and create an empty database with the same name in the connection string. b. 1) Assessment of Data Migration viability means a. d. C++ Yes, only in cases where data extracts is responsibility of client team Yes, as testing of enhanced functionality can be done on old data Show Answer, 49) One should carryout 100% data cleansing and enrichment activity in legacy system? Data migration is the process of moving data from one system to another. What happens to your application after the migration? a. Formal agreement from the relevant corporate security governance team on data access Show Answer, 29) which method is used to extract only frequency of changes that these source systems undergo d. Archiving d. None Of The Above 2nd Dry Run Select the most appropriate one Show Answer, 55) Difference between Data Migration and Data Conversion? To use data migration service, we need to create a replication instance which will be used to run migration tasks. Click on Create replication instance. Show Answer, 40) As per best practice, data cleansing activities should be started b. Standard tools should be used as it comes with lot of prebuilt building blocks for faster execution of projects and also post migration can be used for maintaining quality of data. a. c. Business team in Pre-Prod environment Source System Can you answer one simple question: What is the size of the database you are trying to migrate? c. Application migrations/upgrades c. UAT Attribute & LoV mapping d. Defining Migration strategy Show Answer, 11) Type of data quality management solution, you can adopt You need to evaluate carefully whether you really do require access to your database host. d. 93% SQL Server Integration Services (SSIS) is a component of the Microsoft SQL Server database software that can be used to perform a broad range of data migration tasks. b. b. Cleansing Before discussing the interview questions and answers, it is better to show briefly what the difference between the database administrator and the Microsoft Azure Data Engineer positions is. Can you afford to have some data unavailable for a period of time? c. Both A & B I hope that it’s not because your lead developer told you, “Dude, this is cutting-edge, everybody is using it” and that you had a more structured conversation about why this specific engine is best for your app, your team, and your timeline. It’s important to understand that some of these decisions can be made after the migration. 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