Image Software and Archives

Collections of photos that are published for free public use or for private use can be described as an image archive. They are usually collected and published on the internet or on other supports such as on compact disks, or can usually be downloaded in packages.

They are usually classified into different themes and you can often find nature pictures, people, party images, scientific representations, aircrafts, gardening and almost any hobby or activity has some collection of pictures in an archive.

A great number of image software archives containing images are found online today. Some of them include; the Associated press Photo Archive, California State University, and Flickr Commons.

The virtues and trade-offs of database indexing –

We typically think of a database as a store of digital data, but a database can be a store of written data as well. From this perspective of definition, a library is a database. Despite their differences, a library of books and a database have much in common. Neither the librarian nor the database administrator simply haphazardly stores the data in the next available slot. Both categorize their data. The library has a section for philosophy and psychology, for science and other non-fiction books, one for drama, another for English and so on.

Similarly, a digitized data base will store system data in one folder, programs in another, business data in yet another, and so on. With a simple list of categories and bin or disk locations, both the librarian and the database administrator can find and retrieve what is wanted. This master list serves as an index into some space. A file name is associated to an address. We do not consider this master list a part of database indexing, yet the concept is the same.

Books or digital data are more easily retrieved when they are indexed. Without an index, you have to go down the aisle containing books on, say, psychology, looking at each title, until you find the one you want. The same is true of databases in which database indexing is not applied. If the data is all thrown in to one database, say the customer database, without any regard to order, then conceivably the entire database might have to be searched, starting from the first record, comparing the customer name with the name you want, selecting it if it matches; otherwise, you move on to the next record and compare again, doing this record after record until you’ve found a match. Ordering books by title or ordering a customer database by name significantly improves your search time. Ordering your information, although a necessary step when database indexing, is also not indexing.

Both libraries and database designers have learned that you can improve your search speed by using indexes, keys associated to the location of the item sought. Libraries use card catalogs to index their books, and library maps to help the searcher find the book’s location. Database indexing uses files similar to card catalogs, files that contain a key value associated to a disk location, or that contains a value that points to a specific location. Rather than traverse each track of a disc containing database rows, which are similar to records, a retrieval may read an index file and find the index and the rows location, then go to the row location and read in the row. Database indexing gains you a substantial advantage by avoiding having to read in all records. One record length might be the length of five key-address pairs. The database system will still have to read each key/address sequentially, until it finds a match, but it will have less reading to do.

Use database indexing to minimize your retrieval time, but remember too, it takes longer to store a record because you must also store an index. Using indexes can make your adding and updating time unreasonably long.

Administering a database involves more than the practicalities. There’s an element of art to this task. If you’re considering optimizing your database, you’d be smart to investigate the finer points of database indexing to make your best choice. We at teach you all these under host of Oracle Fusion Applications Training courses.

What are the Top Computer Careers You Can Pursue?

It is the age of computer goes; that without saying. One who does not know how to operate a computer ought to be a caveman. Obviously with computers raiding in at each and every house there are many more careers in computer and a lot more prospects in computer field. It has opened up new avenues for a large number of people who would otherwise have no hope. A computer has brought in a lot of new technology and a lot of new opportunities. It has opened up an entirely new industry.

Avenues for a software engineer

A software engineer can pursue a career in programming, gaming consoles, web development, database development etc. A software engineer’s job is no longer limited to fixing viruses on a PC or fixing up an impaired PC. There is a lot more to it than just making and fixing computers and computer parts. The choices are vast and one has to consider all the options before making a final choice. It is not an easy one but a person has to choose something that will fit his or her interests and pays them a hefty amount at the same time.

Other options

It is not necessary that you ought to be a software engineer in order to make it big in the field of computers. There is a list of computer careers one choose to do apart from software engineering. You could become a computer scientist, a php developer, a data scientist, a systems engineer, a business analyst etc. the choices are unlimited. Also, after gaining a certain amount of experience you could become a project manager. Thus, there is a huge scope in the field of computers and there is absolutely no dearth of opportunities.

Better paying jobs in the field of computers

The list of computer careers is endless but a business analyst and a project manager will obviously be paid more than a regular software engineer guy. It will be shocking to know that professional hackers earn more than everyone in the computer field. Among others, the data analysts, IT auditors and system engineers also earn a lot of money. Other jobs such as that of a software engineer, a programmer, a network administrator also pay a decent salary.

The reach of a career in computers

The spread of the computer today is far & wide. Almost every second device or gadget has a computer like operating system including the phone. Thus, the demand for engineers is very high. Obviously then, a career in computers is highly rewarding. There is no reason for someone in the field of computers to be unhappy or to not get what they want. There is enough pay as well as high demand. There is also adequate potential for growth. Why then one wouldn’t want to pursue a career in the field of computers?

Also, on a long term basis one can see that the computer industry is here to stay and hence, has capability enough to provide a stable career for everyone in the industry.

Benefits of a Computer Science Degree

We live in an age which is dominated by technology all around us. From simple chores to complicated work problems, everything is being run on computer technology. In such a case acquiring a computer science major seems a great career move. A computer science degree focuses on various facets of computer engineering such as building computers, building websites, working on programming and software development. Due to technological advances, this field is the most sought after. A graduate of computer science has very good employment opportunities as there is more and more demand for computer specialists in various industries such as engineering, science, medicine and art.


  • Good Income: One of the biggest advantages of a computer degree is the ability to earn high. Computer science graduates are able to command high paying jobs right after the graduation. The starting salary at an average is $72, 000 and some corporations are willing to pay as high as $105, 000. Companies are willing to pay such a high price as computer science graduates are valuable assets as all the operations are computer and internet technology related.
  • Good Placement: Computer science graduates have better placement opportunities right after graduation. Since every company is technology and computer dependant, there is a high demand for computer science specialists. On- campus placements ensure you acquire a job even before you have graduated from college. If you study further in the field you can expect much better job prospects.
  • Advancement: As mentioned before, computer science is not limited to a single industry, instead it has wide spread application. Since computers and its varied technologies is used in every field, graduates are not only able to secure a good job but can also advance further in their field. Many companies offer top- level posts to computer science specialists. They are then in charge of all the computer and IT related operations of the entire company.
  • Wide Application: Every company wishes to advance and prosper further, this is highly dependent on the use of technology. A computer science graduate can provide the required technological knowledge required by companies. Networking companies, insurance companies, defense organizations, credit card companies etc. all require highly qualified computer engineers. The medical field too requires experienced computer science specialists in order to aide medical researches.

It is evident that by choosing a computer science major, you will have good employment chances as well as secure a good future. There is a high demand for computer science professionals and if you like to explore technology and its applications, a degree in computer science is your calling. Rather than settling for other mainstream degrees, computer science is a good choice especially for those who have liking for computer and computer applications.

How to develop a website – tips for speed

Whatever purpose you are designing your website for, there are a few things that you always need to keep in mind. Make sure that you think about these tips that show you how to develop a website for success.

People like things that they get the right now. It doesn’t even matter if it’s no good what they get right now; just as they can get their hot little hands on their swag with no delay. It’s just the way the human mind works. That’s why Google spends so much on its data centers. For every microsecond that it manages to shave off your waiting time when you do a Google search, they gain customer satisfaction.

Intolerance with delay is also the reason that most people will not look past the first result on Google. Whatever the first result is that Google gives them, people just go with that. As someone who wishes to learn how to develop a website, you have to really learn this. Do whatever it takes to get your website to load faster on anybody’s browser, and you’ll come out on tops.

Now speed of delivery is great. But as we just said, you also need to be on top. And of course, the answer is that you need to pay your SEO dues to make sure that this happens. Actually, following all the SEO rules will actually be help you design a faster website. How, you ask? Traditional SEO wisdom says that you have to use as much actual text as possible so that the search engine spiders can understand what you’re saying. The less stuff you put into your images, the more quickly your images will load.