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Which normal form is considered adequate for normal relational database design?
1 NF
What is a Minimal key?
A minimal key, often referred to as a minimal superkey, is a subset of attributes in a database table that uniquely identifies a record and contains no unnecessary attributes. In other words, if any attribute is removed from this key, it would no longer uniquely identify the records. Minimal keys are essential for establishing primary keys, ensuring data integrity and efficient data retrieval. They help maintain normalization in database design by minimizing redundancy.
What are logical fonts?
Logical fonts are a type of font specification that allows the user to define font styles based on their intended use rather than specific typefaces. Instead of selecting a particular font, users specify attributes like "serif," "sans-serif," "monospace," or "cursive." This approach enables better flexibility and adaptability across different devices and platforms, as the system can substitute appropriate typefaces that match the specified characteristics. Logical fonts are particularly useful in web design and digital publishing for ensuring consistent typography.
What kind of colors are intermediate colors?
Intermediate colors, also known as tertiary colors, are created by mixing a primary color with a secondary color. For example, mixing red (a primary color) with orange (a secondary color) results in red-orange. Other examples include yellow-green and blue-violet. These colors provide a wider spectrum and add depth to color palettes in art and design.
What factors must be considered when changing or enhancing design?
Who will be using the product and who is the target consumer. Will the product appeal to the consumer and how to change the design of the product that make people want to buy the product.
What is a logical database designer?
* Logical database design: * ensuring, via normalisation procedures and the definition of integrity rules, that the stored database will be non-redundant and properly connected; * Physical database design: * specifying how database records are stored, accessed and related to ensure adequate performance. What is logical database designerThe major role of logical database design is to transform the combined, reconciled data specifications into basic or atomic elements following the well established rules for well structures data specifications. With a complete logical database design in place an analyst begins to specify the logic of the particular computer programs and queries needed to maintain and report the database content. The person who maintain or responsible to perform the above task is known as Logical Database designer.
Could you explain the purpose of logical database design?
Logical database design is the process of designing the database at a conceptual level as opposed to a physical level. There are many advantages of conceptual database design, such as the ability to design the database without having to commit to a particular database management system, to produce a document that is readable and understandable to everyone in the company (not just the database person) and to produce an overall design document that can be saved as a part of the documentation of the database for future enhancement, maintenance and support work. Logical database design produces documents for use in the same way that architects produce blueprints for building purposes.
Difference between logical database and physical database?
A logical database refers to the conceptual schema or model of data relationships and structures, independent of how data is stored or accessed. On the other hand, a physical database involves the actual implementation of the database on a specific hardware system, detailing how data is stored and accessed. The logical database design focuses on the organization of data, while the physical database design focuses on optimizing performance and storage efficiency.
Compare the three level of ansi-sparc?
Conceptual database design is the process of constructing a model based on the enterprise. Logical database design is the process of constructing a specific data model. Physical database design is the process of producing of the database on the secondary storage.
How functional dependency is related to database table design?
The functional dependency is related to the database table design through the foreign and primary keys. The foreign and primary keys are functionally dependent on each other.
What is Schema and instances?
In DBMS,Schema is the overall Design of the Database.Instance is the information stored in the Database at a particular moment.In programming,you declare a variable which corresponds to "Schema".But its values changes as and when required which corresponds to "Instance". Google about levels of Database Abstraction. Physical Schema describes database design at physical level while a logical schema describes the database design at the logical level.A database may also have several schemas at the view level, sometimes called subschemas, that describe different views of the database.
What is schema instance?
In DBMS,Schema is the overall Design of the Database.Instance is the information stored in the Database at a particular moment.In programming,you declare a variable which corresponds to "Schema".But its values changes as and when required which corresponds to "Instance". Google about levels of Database Abstraction. Physical Schema describes database design at physical level while a logical schema describes the database design at the logical level.A database may also have several schemas at the view level, sometimes called subschemas, that describe different views of the database.
What are the six phases of database design in computer science?
What are the six phases of database design? Discuss each phase.Database design phases are:1. Requirements collection and analysis.2. Conceptual design.3. Logical design (data model mapping).4. Physical design.
What has the author Peter P Chen written?
Peter P. Chen has written: 'A logical database design framework'
What is the meaning of database design?
There is only one meaning of the words database design. Data base design means the process of creating a very detailed data model of a database. It is used for a database, of course. Hello, Database design is part of system development, it is the process of producing a detailed data model of a database. A database is a collection of information that is organized so that it can easily be accessed, managed, and updated. Databases are used everywhere in the world of web development. - conceptual database design - logical database design - physical database design Database designing , website designing & development requires proper knowledge about that. If anyone wants more information about that can communicate with the Hvantage Technology. I also visited this site it has all related information.
What are the three stages of database design?
The three stages of database design are conceptual design, logical design, and physical design. In the conceptual design stage, the overall structure and high-level relationships of the data are defined, often using Entity-Relationship (ER) diagrams. The logical design stage involves translating the conceptual model into a detailed schema, specifying tables, columns, and data types, while ensuring normalization. Finally, the physical design stage focuses on the implementation details, including data storage, indexing, and performance optimization specific to the chosen database management system.
Design a Web Database?
form_title=Design a Web Database form_header=Hire a developer to design a database to complement your business. What kind of business is the database design for?=_ What will you need the database design to offer?=_ Will you need ongoing support for the design?= () Yes () No () Not Sure
