File Name: ibm datastage interview questions and answers .zip
Learn DataStage interview questions and crack your next interview. This course will help you to achieve excellence in this domain. Below mentioned are the Top Frequently asked Datastage Interview Questions and Answers that will help you to prepare for the Datastage interview. Let's have a look at them.
Introduction to Datastage DataStage is an ETL tool that is used in graphical notation to build solutions to data integration. The job role in DataStage comprises the knowledge of data warehouse, ETL, data storage, configuration, design, various stages, and modules in data stages.
DataStage is used to integrate various systems multiple systems and processes high volumes of data. The popularity of DataStage is because of the user-friendly graphical front-end to design jobs. The following write-up is written to make you aware of DataStage interview questions scenario-based answers. It will be helpful in cracking foundation interview levels of DataStage related jobs. Nonetheless, DataStage real-time interview questions will help to get shortlisted for a job position.
Categories of Datastage Interview Questions. Q1 What is DataStage? DataStage is a tool developed by IBM that is used to design, develop, and execute different applications to fill the gap of multiple tables in data warehouses or data marts. It is software for windows servers that helps in data extraction from databases and modifies them into data warehouses. Q2 What are the types of stages? General Objects. Stages of Data Quality.
Development and Debug Stages. Database connectors. Restructure stages. Real-time stages. Debug and Development stages. Sequence activities. Q3 What are the components of DataStage? DataStage has the number of client and server components. It has four main components, namely:. Datastage Designer. Datastage Director. Datastage Manager. Datastage Administrator. Q4 Explain a few features of DataStage. Extracts data from any number or types of database. Handles all the metadata definitions required to define your data warehouse.
You can view and modify the table definitions at any point during the design of your application. Aggregates data. DataStage transforms data easily. It has a set of predefined transforms and functions. You can use it to convert your data and you can easily extend the functionality by defining your own transforms to use. Loads the data warehouse.
Q5 What are the jobs available in DataStage? Server job. Parallel job. Sequencer job. Container job. Datastage Technical Interview Questions. Q6 State the difference between Server job and parallel job. Q7 At which location DataStage repository is stored?
Q8 Who are the DataStage clients or users? DataStage tool can be used by-. DataStage Administrator. DataStage Designer. DataStage Manager. DataStage Director. Q9 Explain Metadata.
Data about data is known as metadata. A table definition describing the structure of the table is known as metadata. Q10 State maps and locales. Maps: Maps defines the sets that can be utilized in a project.
Locales: Locales define the local formats for date, time, sorting order, etc. Q11 Differentiate between DataStage and Informatica.
Q12 State the types of server components. DataStage Server. DataStage Package Installer. Q13 Define universal stage. A stage that extracts data from or loads data into a Universe database using SQL. It is used to represent a data source, an aggregation step, or a target data table.
Q14 What is a dynamic array in DataStage? Dynamic arrays map the structure of DataStage file records to character string data. Any character string can be a dynamic array. A dynamic array is a character string containing elements that are substrings separated by delimiters. Q15 What are the components of Ascential Datastage? Server Components: Repository, Server, and Plugins. Q16 What are the two types of containers used in DataStage? Inclined to build a profession as Datastage Developer?
Then here is the blog post on, explore DataStage Training. Q17 What is the hash file stage in DataStage? Hash file stage is a binary file used for lookup, for better performance. Q18 State staging variable. Staging variables are the temporary variables created in the transformer for calculation.
Q19 How can u convert the columns to rows in DataStage? The conversion of columns into rows can be done in DataStage utilizing pivot stage. Q20 What is the merge stage? The Merge stage combines a sorted master data set with one or more sorted update data sets. The columns from the records in the master and update data sets are merged so that the output record contains all the columns from the master record plus any additional columns from each update record.
Q21 State the term repository. A repository is a central store that contains all the information required to build a data mart or data warehouse. Q22 What is the work of a DataStage server? A DataStage server runs executable jobs that extract, transform, and load data into a data warehouse. Q23 State a few advantages of DataStage. A data warehousing strategy has the following advantages :. Improves the quality and accessibility of data. Combines valuable archive data with the latest data in operational sources.
Increases the amount of information available to users. Reduces the requirement of users to access operational data. Reduces the strain on IT departments, as they can produce one database to serve all user groups. Allows new reports and studies to be introduced without disrupting operational systems. Promotes users to be self-sufficient. Q24 We have two containers in DataStage — local and shared containers, what does it mean? Local Container is local to the particular job in which we have developed the container and Shared Container can be used in any other jobs.
Q25 I have stored my data at orabulk stage, what does it mean? Q26 Define Active and Passive stages. Passive Stage is used for data extraction and loading.
You can solve this problem by using two way 1. Transformer: Take two stage variables Svar1 and Svar2. Source have single column data, How can I get Target like row 1 goes to target 1, row 2 goes to target 2. Target How can you achieve this scenario? We can use the option "generate multiple files" in sequential file stage and then assign the data column as Key.
DataStage is an ETL tool. One can check the availability of the job across cities including Bangalore, Pune, Chennai and Hyderabad. It is used to integrate multiple systems and processes high volumes of data. DataStage has user friendly graphical frontend to design jobs. Wisdomjobs has interview questions which are exclusively designed for job seekers to assist them in clearing job interviews.
Define Data Stage? Ans: A data stage is basically a tool that is used to design, develop and execute various applications to fill multiple tables in data warehouse or data marts. It is a program for Windows servers that extracts data from databases and change them into data warehouses.
In DataStage interview questions, you will get all the information you need to clear your DataStage interviews with care. As part of these interview questions.. Read More and answers, you will learn the difference between DataStage and Informatica, DataStage routine, join, merge, and lookup stages comparison, quality state, job control, performance tuning of jobs, repository table, data type conversions, and more. DataStage is a commonly used ETL tool in the current market. In this DataStage Interview Questions blog, we have shared an extremely useful set of questions and answers intended for cracking DataStage interviews.
A list of top frequently asked DataStage Interview Questions and answers are given below. DataStage is one of the most powerful ETL tools. It comes with the feature of graphical visualizations for data integration.
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