Databases Interview Questions, Answers for Freshers and Experienced asked in various Company Job Interviews

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DB Architecture (141)
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Databases Interview Questions

Questions Answers Views Company eMail

What is the need to provide size option on create collection?

1 42

Give any 6 data types of MongoDB?

1 40

How do you display the list of all collections of current database?

1 36

What is the symbol of logical OR operation in mongodb?

1 44

What are the different methods to insert document?

1 49

What is the difference between insert() and insertOne()?

1 39

What is the syntax of update document?

1 50

Who developed MongoDB and when?

1 46

What is the exist operator?

1 51

What is the default port of mongodb server?

1 47

What is the limitations to run mongodb on 32 bits OS?

1 49

What is the difference between min key and max key?

1 36

How do you delete a document from a collection?

1 48

Define the mongodb aggregation?

1 41

What is the difference between $lt and $lte?

1 40

Un-Answered Questions { Databases }

What is a coalesce function?

1274

This question asked during interview, 2) At the end of each month, a new table is created for each bank that contains monthly metrics consolidated at the account level. The table naming convention is bankX_YYYYMM where X represents the numeric designation of the bank and YYYYMM indicates the 4 digit year and 2 digit month. The tables contain the following fields: name data type description account text account number registered boolean indicates whether the account is registered num_trans integer number of transactions made during the time period spend numeric(9,2) total spend during the time period a) Write a SQL query that will display the total number of transactions and total spend for "Bank1" during the 4th quarter of 2009. b) Write a SQL query that will display the total number of transactions and total spend at "Bank1" and "Bank2", broken out by registered vs. non-registered accounts, during January 2010 not sure what is correct answer and how to solve?

2553

Can we shrink data file in sql server?

1117

How can we solve concurrency problems?

1115

Why we use the openxml clause?

1063

What are the advantages of database?

1007

How do I find the sql server version?

1099

what is collation? : Sql dba

1220

What kind of problems occurs if we do not implement proper locking strategy?

1489

what is bcp? When does it used? : Sql dba

1051

What is subquery? Explain the properties of a subquery?

1052

Explain system functions or built-in functions? What are different types of system functions?

1055

List the ways in which dynamic sql can be executed?

1074

Where can you add custom error messages to sql server?

1197

Does view occupy space?

1004

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