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The salary distribution is right-skewed, therefore more than 50% of people earn less than the average net salary. These figures have been shrunk after the application of the income tax . In certain countries, actual incomes may exceed those listed in the table due to the existence of grey economies .
A database administrator (DBA) manages computer databases. [1] The role may include capacity planning , installation , configuration , database design , migration , performance monitoring, security , troubleshooting , as well as backup and data recovery .
The degree to which the administration of a database is automated dictates the skills and personnel required to manage databases. On one end of the spectrum, a system with minimal automation will require significant experienced resources to manage; perhaps 5-10 databases per DBA.
The range is based on factors like location (high vs low cost of living locations), experience, or seniority. Pay bands (sometimes also used as a broader term that encompasses several pay levels, ranges or grades) is a part of an organized salary compensation plan, program or system. In an organization that has defined jobs, pay bands are used ...
SQL was initially developed at IBM by Donald D. Chamberlin and Raymond F. Boyce after learning about the relational model from Edgar F. Codd [12] in the early 1970s. [13] This version, initially called SEQUEL (Structured English Query Language), was designed to manipulate and retrieve data stored in IBM's original quasirelational database management system, System R, which a group at IBM San ...
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A range query is a common database operation that retrieves all records where some value is between an upper and lower boundary. [1] For example, list all employees with 3 to 5 years' experience. Range queries are unusual because it is not generally known in advance how many entries a range query will return, or if it will return any at all.
The average wage is a measure of total income after taxes divided by total number of employees employed. In this article, the average wage is adjusted for living expenses "purchasing power parity" (PPP).