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Windows Containers and Docker

Windows Server 2016 features support for containers. These are not Linux-based, but containers that run on Windows and run Windows on the inside. These conform to the Open Container Initiative (OCI). They allow you to run applications insulated from the rest of the system, within portable containers that include everything an application needs to be fully functional. As they did with Linux, containers will change the nature of the software supply chain for Windows users.

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Crossing the Site Domain with JavaScript

Browsers try to prevent a range of malicious attacks by preventing content being accessed by a web page from a different domain to the one that the page was fetched from. If you have a legitimate need to do this, it is a bad idea to disable this method of defence: Instead, there are more legitimate and safer ways of performing cross-domain JavaScript calls such as JSONP or Cross-Origin Resource Sharing, as Dino explains.

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Question of the Day

Adding new column with DEFAULT

Which number will the COUNT() return after executing the following statements:

DROP TABLE IF EXISTS #test;
CREATE TABLE #test (id INT)
INSERT INTO #test (id)
SELECT *
  FROM GENERATE_SERIES(1, 3) AS gs
;

ALTER TABLE #test ADD flag BIT CONSTRAINT DF_#test_flag DEFAULT 0;
go
UPDATE #test SET flag = 0 WHERE id = 1
UPDATE #test SET flag = 1 WHERE id = 2

INSERT INTO #test (id) VALUES (4)

SELECT COUNT(*)
  FROM #test AS t
 WHERE flag = 0
 

See possible answers