Question
A tangent from point P touches a circle at T. If OP = 13
cm and radius = 5 cm, find PT.Solution
ATQ, Triangle OPT is right-angled at T PT² = OP² - OT² = 13² - 5² = 169 - 25 = 144 → PT = √144 = 12 cm
Which SQL function returns the total number of rows in a table?
Which OLAP operation allows drilling down into more detailed data?
A star schema in a data warehouse consists of:
In a star schema, what is the main advantage of using surrogate keys in fact tables?
Which of the following is used to maintain information about the structure of a data warehouse?
A snowflake schema differs from a star schema mainly because:
Which SQL clause is used to summarize data?
A Fact Constellation Schema is also called:
In a data warehouse, a fact table typically contains:
Which schema uses multiple fact tables sharing dimension tables?