Answer: Memory hierarchy is the hierarchy that is created on the basis of the response time of different memories. The performance obtained by the memory helps in creating a computer storage space in distinguished form. The factors considered for the creating of the hierarchy structure are usually response time, storage capacity, complexity etc.
Usage of different kind of memories take place due to different kind of requirements from the system which cannot be fulfilled using one memory device.The requirement is based on saving time, decreasing complexity , improving performance etc.Example of requirements can be like some functions and files do not require much space , some might require quick accessing,etc.
Thus hierarchy of any particular system is in the form of fast to slow order from registers,cache memory, Random access memory(RAM) and secondary memory.
It is false that Programmers can use SQL on systems ranging from PCs to mid-size servers.
Applications for structured query language can be found in a wide range of sectors, mostly in those that deal with database-related tasks. It might be used, for example, by a data analyst to query data sets and produce precise insights. On the other hand, a data scientist might use this programming language to add data to their models.
Businesses and other organizations use SQL tools to create and modify new tables as well as access and edit information and data in their databases.
A database is a tool for gathering and organizing data. Databases can store data about people, things, orders, and other things. Many databases begin in a spreadsheet or word processor. Many firms find it beneficial to move them to a database made by a database management system as they grow larger.
SQL helps manage the data kept in databases, enabling users to get the precise data they require when they need it.
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Answer:
The main cause of lack of jobs is due to automation and the ability for computers to do everything faster, more efficiently and effectively.
Explanation:
A specific example - Data entry jobs are redundant from automation programs
- Economic Forum predicted a net increase of 58 million jobs for automation, so this accounts for losses but isn't case specific to data entry