What is the purpose to use Emergency Access Mode in Cache? How to establishes a Connection without performing authentication?

How to simply going to get the value of the system language from ^%z?  Because  I got a problem, U2 context isn't setup while connecting the SQL Connect.

What is COS Expression? Is the related to SQL Expression?

Can you give a basic code or query related samples? If anyone give a sample, it's understanding easily.

Anyone can explain iKnow technology? Then Why iknow technology is uses a "bottom up" approach?

which queries can search for text containing words of interest in Cache?

how to convert $$zt^%zu2f%zt to macro?

Is the InterSystems Cache has SQL or Non-SQL concept?

I thought REST services is accessing confidential data, so we should follow the authenication rules?

What are the differenent format handles the data from Rest services?

Explain Class(set) Operators and the `(Grave) Operator in Normal and Pattern Expressions? With Example.

How to open a HTML Report using HTTP through Cache and How to Sending HTTP Request and Response from the Report?

Is the possible for Multiple Streams using in single method?