Database administrator questions and answers pdf

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database administrator questions and answers pdf

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There are very few things in the IT realm that cover as much territory as databases. Before the web, and more specifically before the advent of dynamic programming languages, these immense collections of data were the exclusive territory of the deep down programmers — rulers of their vast domain of cells and tables. As time progressed, however, more and more methods of accessing data and then displaying it in a way that was not hard coded became easier to understand and manipulate. Today, it is now possible for a user with no knowledge of database programming to create a database-driven website in under 3 minutes I timed it , and manipulate it easier than it is to get around in the newer versions of a word processor that shall remain nameless. Therefore, the role of the Database Administrator DBA is one that truly has a huge variety of skill sets in it, especially since so many organizations have their own particular slants on things.

300+ TOP DATABASE ADMINISTRATION Objective Questions and Answers

Why is job preparation easier with Wisdomjobs interview questions page? Preparing for a job is now more easy and simple with our interview questions better on wisdomjobs? Because wisdomjobs gives you all information plus all the jobs in one place. When you're interviewing for a new position, you should come prepared to answer the interview questions to win in first attempt.

Having expertise in Database concepts will place you a good career. Database Administration is taking care of the database management systems DBMS like managing and maintaining.

Database Administration role include installation, configuration, planning, design and migration, performance, troubleshooting, security, backup and recovery. Below Database Administration job interview questions and answers page for quick win in job hunt. Answer : A DBA is a Database Administrator, and this is the most common job that you find a database specialist doing.

A Development DBA usually works closely with a team of developers and gets more involved in design decisions, giving advice on performance and writing good SQL. That can be satisfying at a human level because you are part of a team and you share the satisfaction of the teams accomplishments. A Production DBA on the other hand is responsible for maintaining Databases within an organization, so it is a very difficult and demanding job.

He or she, often gets involved when all the design decisions have been made, and has simply to keep things up and running. Therefore, of course, it is also a rewarding job, both financially and in terms of job satisfaction. Question 2. Answer : The maximum no of chars the parameter can store is only valid for char parameters, which can be up to 64K. No parameters default to 23 Bytes and Date parameter default to 7 Bytes.

Question 3. Question 4. Answer : Two group that is above are the left most rank higher than the group that is to right or below it. Question 5. Answer : Tool bar canvas views are used to create tool bars for individual windows. Horizontal tool bars are display at the top of a window, just under its menu bar. Vertical Tool bars are displayed along the left side of a window.

Question 6. Answer : To specify the order of individual group evaluation in a cross products. Question 7. Question 8. Answer : Yes it is possible to insert comments into sql statements return in the data model editor. Question 9. FAST — If simple snapshot used then a snapshot log can be used to send the changes to the snapshot tables.

Question What Is A Snapshot Log? Answer : A snapshot log is a table in the master database that is associated with the master table. Snapshot logs are used in updating the snapshots based on the master table. Answer : These two Oracle utilities are used for loading data into the database. Answer : Exclusive Mode If the first instance that mounts a database does so in exclusive mode, only that Instance can mount the database.

Parallel Mode If the first instance that mounts a database is started in parallel mode, other instances that are started in parallel mode can also mount the database.

Answer : Both the truncate and delete command have the desired outcome of getting rid of all the rows in a table. The difference between the two is that the truncate command is a DDL operation and just moves the high water mark and produces a now rollback.

The delete command, on the other hand, is a DML operation, which will produce a rollback and thus take longer to complete. Answer : Fact tables and dimension tables. A fact table contains measurements while dimension tables will contain data that will help describe the fact tables. What Is A Segment? Answer : A segment is a set of extents allocated for a certain logical structure.

Answer : Disable the foreign key constraint to the parent, drop the table, re-create the table, enable the foreign key constraint. While a procedure does not have to return any values to the calling application, a function will return a single value.

A package on the other hand is a collection of functions and procedures that are grouped together based on their commonality to a business function or application. They are also used to pipeline information in an ETL process. Answer : Materialized views are objects that are reduced sets of information that have been summarized, grouped, or aggregated from base tables. They are typically used in data warehouse or decision support systems.

Answer : A Control file records the physical structure of the database. It contains the following information. Time stamp of database creation. Describe What Redo Logs Are? Answer : Redo logs are logical and physical structures that are designed to hold all the changes made to a database and are intended to aid in the recovery of a database.

Answer : Coalescing is only valid for dictionary-managed tablespaces and de-fragments space by combining neighboring free extents into large single extents. Answer : A temporary tablespace is used for temporary objects such as sort structures while permanent tablespaces are used to store those objects meant to be used as the true objects of the database.

What Is Distributed Database? Answer : A distributed database is a network of databases managed by multiple database servers that appears to a user as single logical database. The data of all databases in the distributed database can be simultaneously accessed and modified. Answer : Partitioning is a method of taking large tables and indexes and splitting them into smaller, more manageable pieces. Answer : It consists of one or more data files.

What Is Database Clusters? Answer : Group of tables physically stored together because they share common columns and are often used together is called Cluster. What Is An Index? Answer : An index is a database structure used by the server to have direct access of a row in a table.

An index is automatically created when a unique of primary key constraint clause is specified in create table command Ver 7. What Is A Database Instance? Answer : A database instance Server is a set of memory structure and background processes that access a set of database files. The process can be shared by all users. The memory structure that are used to store most queried data from database. Answer : —To perform one of these function on an index, table, or cluster — To collect statistics about object used by the optimizer and store them in the data dictionary.

What Is Default Tablespace? Answer : The Tablespace to contain schema objects created without specifying a tablespace name. What Is Tablespace Quota? Answer : The collective amount of disk space available to the objects in a schema on a particular tablespace. What Is Statement Auditing?

Answer : Statement auditing is the auditing of the powerful system privileges without regard to specifically named objects. Start up the database. Popular Interview Questions. All Interview Questions. Database Administration Practice Test. IT Skills. Management Skills. Communication Skills. Business Skills. Digital Marketing Skills.

Human Resources Skills. Health Care Skills. Finance Skills. All Courses. All Practice Tests. Question 1. What Is A Dba? Sybase Interview Questions Question 3. MongoDB Tutorial Question 5. Answer : To manipulate images in image items. Answer : Yes it is possible to insert comments into sql statements return in the data model editor Question 9.

7 Database Administrator Interview Questions and Answers

Explore Now! These questions and answers are suitable for both freshers and experienced professionals at any level. The source data will be copied to destination through replication agents jobs. Object level technology. The source data will be copied to destination via Transaction Log backup jobs. Database level tech. The data will be stored in shared location which is used by both primary and secondary servers based on availability of the server.

Why is job preparation easier with Wisdomjobs interview questions page? Preparing for a job is now more easy and simple with our interview questions better on wisdomjobs? Because wisdomjobs gives you all information plus all the jobs in one place. When you're interviewing for a new position, you should come prepared to answer the interview questions to win in first attempt. Having expertise in Database concepts will place you a good career. Database Administration is taking care of the database management systems DBMS like managing and maintaining.


All students, freshers can download Database Data and Database Administration quiz questions with answers as PDF files and eBooks. Where can I get Database​.


SQL Server DBA Interview Questions and Answers

Solved examples with detailed answer description, explanation are given and it would be easy to understand. Here you can find objective type Database Data and Database Administration questions and answers for interview and entrance examination. Multiple choice and true or false type questions are also provided. You can easily solve all kind of Database questions based on Data and Database Administration by practicing the objective type exercises given below, also get shortcut methods to solve Database Data and Database Administration problems.

Many types of database infrastructure exist, so you want to confirm that the applicant has the background that you're looking for. Look for people who mention the specific database versions they're familiar with, as well as a brief explanation of their experience level with each. What to look for:. I started with the version and worked with that for five years. Many organizations are moving from a fully on-premises infrastructure to the cloud.

If you a Database Administrator and need to update DBA technical knowledge or need to prepare for a job interview? This DBA Interview Questions and Answers are basic and advance level so every one who is DBA can get more help with these database interview questions and answers tutorial and guide. A DBA is a Database Administrator, and this is the most common job that you find a database specialist doing. A Development DBA usually works closely with a team of developers and gets more involved in design decisions, giving advice on performance and writing good SQL. That can be satisfying at a human level because you are part of a team and you share the satisfaction of the teams accomplishments.

Database Administration Interview Questions & Answers

There are a lot of opportunities from many reputed companies in the world. What purpose does the Model Database Server? The model database , as its name implies, serves as the model or template for all databases created on the same instance.

Poor data administration can lead to which of the following? A single definition of the same data entity B. Familiarity with existing data C. Missing data elements D. All of the above. Answer: C. A traditional data administrator performs which of the following roles?

What to look for: "I use a combination of manual and proactive monitoring to keep an eye on the database servers. I've helped software developers implement ODBC so they can pull the right data sources into custom enterprise apps. What to look for: "I have experience implementing and optimizing Hadoop solutions for enterprises. Add New Question. Big data technology is another rapidly growing area. Database Administrator Interview Questions, Strong understanding of infrastructure differences, Desire to learn about trends and new solutions. A willingness to learn Hadoop or existing experience may help your company use your data more efficiently.


Download PDF. Add New Question. If you a Database Administrator and need to update DBA technical knowledge or need to prepare for a job interview?


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Всего трое. Халохот стиснул револьвер в руке, не вынимая из кармана. Он будет стрелять с бедра, направляя дуло вверх, в спину Беккера. Пуля пробьет либо позвоночник, либо легкие, а затем сердце. Если даже он не попадет в сердце, Беккер будет убит: разрыв легкого смертелен.

Она двигалась вслепую, скользя на гладких ступеньках, и скопившаяся влага капала на нее дождем. Ей казалось, что пар буквально выталкивает ее наверх, через аварийный люк. Оказавшись наконец в шифровалке, Сьюзан почувствовала, как на нее волнами накатывает прохладный воздух. Ее белая блузка промокла насквозь и прилипла к телу. Было темно. Сьюзан остановилась, собираясь с духом.

Database Administrator (DBA) interview questions

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