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Is possible that during the physical database design and creation step of database development you might want to return to logical database design activity?
Wiki User
∙ 7y ago
There are many reasons why this could occur, Just a few:
Changes or clarification of user requirements
Expansion of project scope
Budgetary constraints invalidating original assumptions
Testing demonstrating unacceptable query processing time
Wiki User
∙ 7y ago
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Define domain with respect to dbms?
In database technology, domain refers to the description of an attribute's allowed values. The physical description is a set of values the attribute can have, and the semantic, or logical, description is the meaning of the attribute.
What is the differ between Replica and Archive in Lotus Notes?
In Notes, you can go to Help, then Help Topics, then search for information like this. Here's what Notes Help says: A replica is a duplicate of a database with the same replication ID number as the original database. Notes lets you create a local (offline) replica of any database you use. Through replication, Notes can keep a local replica identical with the database on the server, so you make changes once, but they appear in both places. Replication is the process of making replicas identical. Notes uses the replica ID number to locate and replicate all replicas of a database. A database copy (created by choosing File - Database - New Copy) does not have the same ID number as its original database, and doesn't replicate. A copy of a database file created through the operating system is a replica and does have the same ID number as the original database. Replication is a great tool to have when you're away from your office network, because working in a local replica is much faster than making the same changes over a dialup telephone connection. Replication also lets users on various networks in a variety of (physical) locations share the most current version of information in a database. An archive is a copy of a database you can create to store information no longer in use. Like a replica, an archive contains documents and design elements from the original database, but unlike a replica, an archive never sends any changes back to the original database.
What is the architecture of a database system?
The atchiteture of a database system is the design of the database for a given application. In some cases an application may be divided into multiple databases. Each database contains one or more tables, each of which contain one or more fields. Fields within a database contain the data required by the associated application, and the business that uses it. The architecture of a database is the physical design of the datbase, its tables, and associated objects such as Stored Procedures, Triggers, Functions, and routines.
How is a file processing system approach different from database approach?
In simplest terms, a file processing system coordinates only physical access to data. A database organizes and coordinates both physical and logical data access. A database specifically reduces the amount of duplication of data in a system. Additionally, since a database is designed to allow access queries where a file system only allows pre-determined data access,database queries can be far more refined and flexible, as well as granting user access privileges to protect stored data. Databases, unlike file processing systems, allow multiple users to access the same data simultaneously. File processing systems are far more restricted on this level. The database's organization makes it far easier to enforce uniform standards over the data because data can be formatted to fit a particular screen, allowing a single type of data file to be created across the system for example. Database applications are quicker and easier to develop due to standardized components. Due to their design, databases are far more flexible as well. They can be adapted far more easily to cope with changing situations than a file processing system. The economy of implementing a database across a huge network is greater than implementing a full file processing system. Databases are essentially easy to install, and are far more user friendly. The latter makes training far easier too. The ease with which data can be changed across the database makes the provision of up to date information to any and all users of a database incredibly easy. File processing systems may have problems where the data is in different formats, whilst databases format their data to allow it to work within the database itself.
What are the major inputs into physical database design?
~Normalized Relations, volume estimates, attribute definitions, response time expectations, data security needs, backup/recovery needs, integrity expectations, DBMS technology used
How does lack of physical education affect children's holistic development and instil lifelong physical activity habits?
lack of knowledge on skill of pe
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.
Difference between logical database and physical database?
The logical database is how the data is percieved in the tables, the way the data is actually stored on the storage medium is the physical view of the database.
Why is physical development important?
Physical development is important because it affects overall health and well-being. It helps to build strong muscles, bones, and a healthy cardiovascular system. Additionally, physical activity can improve coordination, motor skills, and overall physical fitness.
What Physical activity that makes talking difficult is considered to be?
Vigorous Physical Activity :)
How are physical development and activity related to a child's self concept?
Physical development and activity can positively impact a child's self-concept by fostering feelings of competence, confidence, and achievement. Engaging in physical activities can help children develop skills, build strength and coordination, and improve their body image, leading to a more positive self-perception. Additionally, physical activity can provide opportunities for social interaction, teamwork, and leadership, which can further enhance a child's self-concept.
Physical activity that makes talking difficult is considered?
Vigorous physical activityVigorous Physical Activity :)Vigorous Physical Activity :)Moderate Physical activityModerate Physical activityreadingreadingVigorous physical activityYouYou
What are the five stages of physical activity?
1.Pre-contimplation (Not considering physical activity) 2. Contemplation (Considering Physical activity) 3. Preparation (Taking steps to prepare for physical activity) 4. Action (Performing physical activity) 5. Maintenance (Performing physical activity on a regular basis)
Physical activity that starts with the letter a?
A physical activity is aerobics.
How does physical activity promote social behavior?
SOCIAL ACTIVITY PROMOTE SOCIAL DEVELOPMENT IN SENIORS IN SUCH A WAY THAT THESE ACTIVITIES GIVE THEM CHANCE TO FEEL YOUNG AGAIN AND ALSO THIS CAN HELP FORGET THEM FROM THEIR WORRIES AND PROBLEMS IN LIFE.
In Buddhism was there a spiritual creation of the world or only a physical creation of the world?
In Buddhism there is both a spiritual creation and a physical creation of the world depending on which of the three creation theories the Buddhist believes.
What is A lifelong physical activity is?
any physical activity that you enjoy and can do now and for the rest of your life.
