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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
What is the earliest non computer animation?
Humours phases of funny faces by J. StuartBlackton in 1909 Humours phases of funny faces by J. Stuart Blackton in 1909
A database is made up of one or more related files (or tables in Microsoft Access).
A file is made up of one or more related records.
Records are made up of one or more related fields.
A field is made up of a group of related characters. It is a piece of information about something.
Disadvantages of database management system?
Advantages
- Reduced data redundancy
- Reduced updating errors and increased consistency
- Greater data integrity and independence from applications programs
- Improved data access to users through use of host and query languages
- Improved data security
- Reduced data entry, storage, and retrieval costs
- Facilitated development of new applications program
Disadvantages
- Database systems are complex, difficult, and time-consuming to design
- Substantial hardware and software start-up costs
- Damage to database affects virtually all applications programs
- Extensive conversion costs in moving form a file-based system to a database system
- Initial training required for all programmers and users
What are the disadvantages of online storage?
Disadvantages:
* Less Control - Since the data is with a 3rd Party, you have less control over it than what you could have had if the data was onsite or locally on your computer.
* Closure of Online Company - There is a looming threat that an online company where your data is stored might just go out of business without any warning and with it all your data too would be GONE!
* Security - Since data is online, the accessiblity for it is global so is the security threat. Any hacker will have access to the data as much as you have, the only thing that would stop them is an access code / password. If you havent chosen the encryption right or if you havent chosen a strong password, that's all the security you have for your data!
Source: Imran Rafai
Kohls is a merchandise company that would use accounting information systems as the lifeline or backbone of the business, especially since accounting systems include people, records, methods, and equipment. As a former associate, I have had the ability to learn about how Kohls operates. Kohls uses source documents to include checks, packing slips, cash register receipts, and employee time cards, to name a few. Input devices used would be scanners, both at the register and radio frequency guns that maintain inventory and pricing information. Information processors are at the store level and also at the home office. Management take reports and evaluate the sales, credit card goals, and payroll. I believe most of the information storage is at the Home Office. The information obtained from the daily reports come from there, such as sales forecasts, payroll projections, etc. Output devices are located throughout the stores and the home office in the form of registers, printers, monitors, etc.
It is my opinion that the company would not be able to run efficiently without these items. They all work together to streamline the accounting process that could take an extraordinary amount of time to compile should these things not exist. The system could be challenging because most of the analysis and input relies on a human factor. Errors in reading reports or a cashier that does not properly complete a markdown on merchandise can alter the ending outcome of the reports.
What is the largest decimal number that can be stored using 8 bits?
11111111; 255 or 1+2+4+8+16+32+64+128=255
Answer 255
There are 8 bits in a byte when all are set to zero (turned off) then the value is 0.
When all of the bits in a byte are set to 1 (turned on) you get the largest value that a byte holds which is 255.
Difference between data structure and dbms?
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A data warehouse functions as a repository for all the data held by an organisation. The main functions are to reduce cost of data storage, facilitate data mining, and facilitate ability to back up data at an organisational level.
Discuss the advantages and disadvantages of database management systems?
Advantages
-controls data redundancy
-consistency
-improved data integrity
-security and enforcement of standards and economy of scale
-balance conflicting requirements
-easy to access data and maintain it
-increase in productivity and concurrecy
-provides back up and recover services
Disadvantages
-complex
-costly
-adverse effect of failure
A hanging indent marker is a tool available on Microsoft Office products. When you use this tool, it allows you to select a specific paragraph that you want to be indented throughout your paper.
What are the examples of database?
A telephone directory. It has a bunch of information but it is all sorted efficiently to be able to find exactly what you need without having to read the whole phone book.
Advantages and disadvantages of a database?
advantages of database :
* data independence ( data and the program are independent , for example if the format of the data has been changed need not to change the file structure WHAT the data is re queried is enough no need to worry about HOW to retrieve the data).
* data redundancy can be avoided ( in file for example take two file one is saving file and another is transaction file in both the customer address will be in both file it lead to replication of data his can be avoided in database using normalization (norm 1)
* data security (database provide security for accessing of all data)
* data integrity (data will be accessed my all user its centralized so accuracy(integrity) will be maintained..
disadvantage;
vice versa
Does RAM only hold temporaarily data?
The acronym "RAM" translates to "Random Access Memory". It is temporary storage place for data. When PC is turned off or rebooted, the RAM is emptied and data lost.
On the other hand, "ROM" (Read Only Memory) remains permanently programmed onto some chips and cannot be changed in any normal fashion without getting into the machine language code.
What are Advantage disadvantage of file system?
This question is not clear and i think the it was supposed to read like"what are the disadvantages of file processing sytem".If this is what the question was meant to be then the answer would be as follows: 1. Program-Data Dependence. File descriptions are stored within each application program that accesses a given file.
2. Duplication of Data. Applications are developed independently in file processing systems leading to unplanned duplicate files. Duplication is wasteful as it requires additional storage space and changes in one file must be made manually in all files. This also results in loss of data integrity. It is also possible that the same data item may have different names in different files, or the same name may be used for different data items in different files.
3. Limited data sharing. Each application has its own private files with little opportunity to share data outside their own applications. A requested report may require data from several incompatible files in separate systems.
4. Lengthy Development Times. There is little opportunity to leverage previous development efforts. Each new application requires the developer to start from scratch by designing new file formats and descriptions
5. Excessive Program Maintenance. The preceding factors create a heavy program maintenance load. 6. Integrity Problem. The problem of integrity is the problem of ensuring that the data in the database is accentuate
How do you hook up a computer tower to your laptop?
Go to a computer store and pick up a lead wire that goes from your graphics card on your PC to your TV, if it is PC compatible. A sales associate at your computer store should be able to help you find the right hardware.
What are the essential in Transaction Processing System?
transaction processing system are computerized system that perform and record the daily routine transaction necessary to conduct business
Flat file databases are also called as relational databases describe any different means to encode a database model. This requires data to be kept in one large table. Big up Philip Proctor
When you try to create a data source name (DSN) with the Microsoft Text Driver on a computer that has MDAC 2.1 or later installed, you may get the following error: Failed to save table attributes of (null) into (null). Back to the top Microsoft has confirmed that this is a bug in the Microsoft products that are listed at the beginning of this article. Back to the top This behavior is inconsistent. The error may occur when you try to create a USER DSN and then it might occur when you to create a System DSN.
The error only occurs when adding a DSN.
NOTE: You can ignore the error and save the DSN. Then you can reconfigure the same DSN without getting an error.
Back to the top 1. Install MDAC 2.1 or later. 2. Create a text file named TestDSN.csv using Notepad. Enter "1,2,3,4" in the text file and then save the file. The file name and content are not important. 3. Open Control Panel and click the ODBC icon and add a User or System DSN. 4. Select "Microsoft Text Driver (*.txt;*.csv)". 5. Enter a data source name and clear the "Use Current Di When you try to create a data source name (DSN) with the Microsoft Text Driver on a computer that has MDAC 2.1 or later installed, you may get the following error: Failed to save table attributes of (null) into (null). Back to the top Microsoft has confirmed that this is a bug in the Microsoft products that are listed at the beginning of this article. Back to the top This behavior is inconsistent. The error may occur when you try to create a USER DSN and then it might occur when you to create a System DSN.
The error only occurs when adding a DSN.
NOTE: You can ignore the error and save the DSN. Then you can reconfigure the same DSN without getting an error.
Back to the top 1. Install MDAC 2.1 or later. 2. Create a text file named TestDSN.csv using Notepad. Enter "1,2,3,4" in the text file and then save the file. The file name and content are not important. 3. Open Control Panel and click the ODBC icon and add a User or System DSN. 4. Select "Microsoft Text Driver (*.txt;*.csv)". 5. Enter a data source name and clear the "Use Current Directory" check box. 6. Select the directory where the TestDSN.csv file was saved as the current directory. 7. Click the Option button. 8. Click Define Format. 9. Select the file TestDSN.csv. 10. Select the CSV format (since the file you created is CSV delimited, otherwise it is not important). 11. Click Guess, which will give the field names, and so forth. 12. Next, click OK. You will then get the error: Failed to save table attributes of (null) into (null). rectory" check box. 6. Select the directory where the TestDSN.csv file was saved as the current directory. 7. Click the Option button. 8. Click Define Format. 9. Select the file TestDSN.csv. 10. Select the CSV format (since the file you created is CSV delimited, otherwise it is not important). 11. Click Guess, which will give the field names, and so forth. 12. Next, click OK. You will then get the error: Failed to save table attributes of (null) into (null).
What is the actual meaning of RAID?
RAID (Redundant Array of Independent Disks) A disk subsystem that is used to increase performance or provide fault tolerance or both. RAID uses two or more ordinary hard disks and a RAID disk controller. In the past, RAID has also been implemented via software only. In the late 1980s, the term stood for "redundant array of inexpensive disks," being compared to large, expensive disks at the time. As hard disks became cheaper, the RAID Advisory Board changed "inexpensive" to "independent." More Questions? E-mail me at oliverbikers@yahoo.com
Difference between in-degree and out-degree of a vertex in data structures?
In-degree is a count of the number of ties directed to the node, and out-degree is the number of ties that the node directs to others.
Data type, or more commonly datatype as it related to database management systems is the phyisical format by which the data in a database managment is stored on the computers harddrive. The datatypes are database specific. In general, you need to have the same datatype to be able to compare, sort, append data. Data that is not of the same type needs to be CAST or converted to the other datatype before such operations on the data can be performed. Many times this conversion is internal, but in some database management systems, you ned to explicitly convert the data.
What are 3 uses of databases in the business world?
The three uses for databases include, storing, retrieving and analyzing information. Many businesses are creating cloud databases to reduce costs.
How accurate is this database?
Accurate? As noted in the text for this site, it is questions asked by regular people and answered by regular people. Some people know what they are talking about, others don't. I wouldn't use this as the only reference source for my questions but I think generally it is good. I like the format and the idea.
What is the difference between program and procedure?
A procedure is a subroutine that can be called from another part of the program. Procedures can be as small as 2 lines (the definition line, and then the procedure itself), or consist of hundreds of lines.
What is the full Meaning of EDVAC?
i was used to solve problems in mathematics and economics. it already has a stored program.
by: jerico abalos
