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Describe the external level of the ansi sparc?
The external level of the ANSI/SPARC architecture represents how users view the data stored in the database. It defines the logical view of the data for each user, which includes specifying the data format, structure, and access permissions that users interact with. This level shields users from the complexities of the internal and conceptual levels of the architecture.
Which format means users can view but not change data in a workbook?
Protected mode.
What is the difference between a logical view and a physical view of data?
The logical view presents data as they would be perceived by end users or business specialists, whereas the physical view shows how data are actually organized and structured on physical storage media.
What type of form enables a user to simultaneously view both simple form and database views of the data?
A "split form" in applications like Microsoft Access allows users to simultaneously view both a simple form and a database view of the data. This type of form displays a form view for data entry and a datasheet view for a tabular representation of the same data, enabling users to easily compare and edit information. This dual view enhances usability and data management efficiency.
Which of the following formats means that users can view but not change data in a workbook?
read only
What is data segregation?
Data segregation is certain data that has been restricted to certain users for view. Data can be filtered so that only the resources that are available to the individual will be seen.
What is the tool that enables users to view the same data in different ways using multiple dimensions?
The tool that enables users to view data in different ways using multiple dimensions is called a pivot table. Pivot tables allow users to reorganize and summarize data in a spreadsheet or database based on different criteria, such as rows, columns, and filters, making it easier to analyze and draw insights from the data.
A what is a temporary view of the data that is removed when you close the data?
A temporary view of data is often referred to as a "temporary table" or "temporary view" in databases. It allows users to create a view of data that exists only for the duration of a session or transaction. Once the session is closed or the transaction is completed, the temporary view is automatically removed, ensuring that it does not persist in the database. This feature is useful for managing data without affecting the underlying database schema.
What is view of data in dbms?
In a database management system (DBMS), a view is a virtual table derived from one or more base tables. It allows users to query or manipulate data without directly accessing the underlying tables, providing a layer of abstraction and security. Views can simplify complex queries, hide sensitive information, and provide a consistent interface to the data.
What services and products are provided by the company called TestResult provide?
TestResult is a live data logging and presentation service. That allows users to view and download visual representations of data from multiple data points.
What is data abstraction in DBMS?
Purpose of database users with an abstract view of the data that is system hides certain details of how the data are stored and maintained. It gives an architecture is to separate the user applications and the physical database.
What is the examples of three levels of schema?
Schemas can be classified into three levels: physical schema, logical schema, and view schema. The physical schema refers to the actual storage of data on hardware, detailing how data is stored in files and disks. The logical schema defines the structure of the database in terms of tables and relationships, abstracting away the physical details. Lastly, the view schema presents how data is seen and interacted with by users, often representing a subset or specific aspect of the logical schema tailored for particular applications or user roles.
