Database Basics

Data.gov provides more than 250,000 U.S. government ______ sets to support research and application development.

Cancer.gov collects and reports ______ and information relative to all forms of cancer.

Kaggle.com, owned by Google, supports an online community that allows users to find and publish ______ sets.

Data.nasa.gov provides numerous ______ sets in categories such as aerospace, earth science, and space science.

Data is collected and processed to aid in a variety of tasks, such as forecasting weather, analyzing financial investments, and tracking the global spread of ______.

The amount of data produced and collected can vary. Ex: A small business might track an inventory of a few thousand items, but a large commerce website might track ______ of items.

Today, data is mostly digital, encoded as zeros and ones on electronic and magnetic media. The shift from analog to digital data facilitated the rise of large ______ databases.

Database administrators enforce procedures for user access and database system availability. A database ______ determines the format of each data element and the overall database structure. Database designers must balance several priorities, including storage, response time, and support for rules that govern the data. Since these priorities often conflict, database design is technically challenging.

A database ______ develops computer programs that utilize a database. Database programmers write applications that combine database query languages and general-purpose programming languages. Query languages and general-purpose languages have significant differences, so database programming is a specialized challenge.

A database ______ is a consumer of data in a database. Database users request, update, or use stored data to generate reports or information. Database users usually access the database via applications but can also submit queries directly to the database system.