P pulmonale), but have a low predictive value (~20%). A P wave with increased amplitude can indicate hypokalemia. It can also indicate right atrial enlargement. A P wave with decreased amplitude can indicate hyperkalemia. Bifid P waves (known as P mitrale) indicate left-atrial abnormality-e.g. dilatation or hypertrophy.
SYSTEM is a schema..... Technically -- A schema is the set of metadata (data dictionary) used by the database, typically generated using DDL. A schema defines attributes of the database, such as tables, columns, and properties. A database schema is a description of the data in a database.
The Star schema is a simple, easy and effective concept, recognized by technical resources as well as by the business analysts. The central intersection entity (Sales order) defines a fact table. Attributes which forms 1:N relationship should be stored in the same dimensions (i.e. Cust and cust name, city..