Contents
Why we use view instead of stored procedure?
View is simple showcasing data stored in the database tables whereas a stored procedure is a group of statements that can be executed. A view is faster as it displays data from the tables referenced whereas a store procedure executes sql statements.
Why do we use database views?
Views can join and simplify multiple tables into a single virtual table. Views can act as aggregated tables, where the database engine aggregates data (sum, average, etc.) and presents the calculated results as part of the data. Views can hide the complexity of data.
Is used to control the data and access to the database?
Database access control is a method of allowing access to company’s sensitive data only to those people (database users) who are allowed to access such data and to restrict access to unauthorized persons. Without authentication and authorization, there is no data security.
What does data retrieval mean in a database?
What Does Data Retrieval Mean? In databases, data retrieval is the process of identifying and extracting data from a database, based on a query provided by the user or application. It enables the fetching of data from a database in order to display it on a monitor and/or use within an application. Advertisement.
Which is the simplest way to retrieve data?
Let’s begin by working with the simplest means of data retrieval: reading from a text file. Text files can be used as a very simple database (you could store settings for a program, a list of high scores, numbers for a graph, etc.) or to simulate a more complex data source.
Why are data and log files placed on separate drives?
This rule checks whether data and log files are placed on separate logical drives. Placing both data AND log files on the same device can cause contention for that device, resulting in poor performance. Placing the files on separate drives allows the I/O activity to occur at the same time for both the data and log files. Recommendations
What happens when data fields are repeated in a database?
When the same data fields are repeated in a database or file storage system, data corruption arises. If a file gets corrupted, for example, and an employee tries to open it, they may get an error message and not be able to complete their task.