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Database Programming
Databases are collections of tables that maintain and display information, often collaboratively; this information can be used for interaction with an application or gaining general knowledge. Questions about database engines and modifying or using them belong in this category.
8,803 Questions
Advantage and disadvantage of command system?
advantages.:
Maximises the continues utilization of resources.
Distributes wealth equally among all peoplce so there are no inequalities.
Only products that are required are produced hence prevents production of socially undesired products. Disadvantages.
Lack innovation.
Can not detect consumer preferences accurately.
Resources are misallocated as consumer demands are not satisfied by production.
overstaffing problems, poor product quality, lack of efficiency.
What keeps an information system dynamic?
An information system requires designers and users capable of systems thinking to keep the system dynamic within an environment of constantly changing variables over time.
What is systems and procedures in general?
For any / every work there must be a systems & Procedures for its success / destiny.
To fix up the Rules & regulation to follow the systems.
To fix up the policies to follow the Procedures.
Where the Policies , systems, procedures for the process of any given task.
What does GSI stand for in the criminal system?
I believe that the definition varies but if memory serves me correctly, GSI is "Gross Sexual Impossition"
What query will delete all the records satisfying the criteria enter in the query?
A delete query.
A delete query.
A delete query.
A delete query.
A delete query.
A delete query.
A delete query.
A delete query.
A delete query.
A delete query.
A delete query.
How do you retrieve a date field from MS Access through PHP?
Use this class: http://www.phpclasses.org/browse/package/2036.html Or if you have trouble with that, look through some of the other classes under the "database" category on that site. -DJ Craig
Do you have inner join command in oracle?
yes, we do have inner join command in oracle. Inner Join is used to combine related tuples from two relations.It allows to evaluate a join condition between attributes of the relations on which join is undertaken .
What is difference between direct addressing and indirect addressing in c plus plus?
Indirect addressing uses a pointer. Indirectly accessing the memory being pointed at is known as dereferencing. Direct addressing uses a variable's name or a reference to obtain the value.
When designing a table why is it important to place field properties within each field?
Fields specify how a field can work, what kinds of data can be put in to a field size and other things. You need to specify formats for numbers and dates. You need to specify the size of text fields. There are many optional properties which can prove useful in different situations. Doing validation on a field can be useful to reduce errors. You can ensure data is entered into a field. There are so many other things that properties do. So they are an essential part of designing a field in a database.
What is the meaning of the repeat command?
The exact meaning will depend on the language. In general, however, the repeat command will repeat a block of statements while a condition remains true (much like a do...while or for loop).
What is the concept of mounting a file system?
Mounting a file system is what allows one to access the access, read, and modify it. It doesn't matter where the file system is mounted, either (though an empty directory is preferable). The mount command binds the physical device to whichever directory you choose and calls the proper kernel driver to allow actual file operations.
What is a virtual entity type used to represent multiple entities and relationships in an ERD?
entity cluster
What are the Advantages and disadvantages of star networking?
A star network provides good performance, is easy to install and expand. Failures out in the network don't tend to impact other nodes (unlike ring networks, for example, which fail completely when a node goes down or else require elaborate double-ring schemes to cope). A classically-cited disadvantage is that it's "expensive to install" and quite a bit of hardware (e.g. hubs/switches) is required. If you look at ethernet though (the king of modern networks more due to economy than to efficiency), it tends lend naturally to star configuration.
