Cognizant Test Analyst interview questions

First i had a tele call ,where they asked about my skillset and experience details.Then they scheduled for an technical interview.And after few days HR discussion happened.One week later got an offer

3 rounds interview ...2 tech n 1 Hr round Good experience Talent Aquistion team diligently follow up on the interviews and help with any question or queries. Write the code to find the length of a string without using the string functions. ... How will you print the address of a variable without using a pointer? ... What do you understand about Proactive, Retroactive and Simultaneous Update in the context of DBMS?