Answer / praveen

Transaction must be Atomic (it is one unit of work and does
not dependent on previous and following transactions)

Consistent (data is either committed or roll back, no
“in-between” case where something has been updated and
something hasn’t)

Isolated (no transaction sees the intermediate results of
the current transaction)

Durable (the values persist if the data had been committed
even if the system crashes right after).

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select names starts with a,b,c

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Why Do you want to work in this company?

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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?

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