The normal QRS axis, like the P wave axis, points downward and to the left within a coordinate between -30 o and +90 o. This axis is said to be deviated to the left (left axis deviation or LAD) if it lies between -30 o and -90 o; and deviated to the right (right axis deviation or RAD) if it lies between +90 o and 180 o.
Schema.org Structured Data. Schema.org (often called Schema) is a specific vocabulary of tags (or microdata) that you can add to your HTML to improve the way your page is represented in SERPs.chema.org (often called Schema) is a specific vocabulary of tags (or microdata) that you can add to your HTML to improve the way your page is represented in SERPs.
An XML Schema is a document which describes another XML document. XML Schemas are used to validate XML documents. An XML schema itself is an XML document which contains the rules to be validated against a given XML instance document.ML columns and variables can be bound to an XSD schema and the Schema Processing Engine will perform validations on the data, based on the schema definition. Please note that the support of XSD in SQL Server 2005 is still limited.