A heap, in the context of data structure, is a tree-based data structure that satisfies the heap property, where each element is assigned a key value, or weighting. The lower value key always has a parent node with a higher-value key. This is called a max-heap structure, and among all nodes, the root node has the highest key. Sometimes, a...
A database report is the formatted result of database queries and contains useful data for decision-making and analysis.
Most good business applications contain a built-in reporting tool; this is simply a front-end interface that calls or runs back-end database queries that are formatted for easy application usage. For example, a banking software application may contain specifically defined reports on all customers with large deposits or reports on monthly loan summaries for all customers.
To extract data, a query must be run with various tools that call at least one query language. Structured querying language (SQL) is the most popular and well-known querying language. Other query languages include:
Another standard reporting feature is the ability to create output parameters or restrictions. For example, when a user runs a monthly loans summary report, the user first enters the specific month or account type associated with the requested report. Specialized reporting tools not typically available via simple queries may be connected to a database to facilitate additional reporting capabilities. These often offer greater data insight and highlight trends and patterns, and are frequently labeled under the buzzword "business intelligence" (BI).
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