Database Indexes : Database Index

Data objects can model relational data or advanced data types such as graphics, movies, and audio. Smalltalk, C++, Java, and others are objects used in object-oriented data. The object-relational is a combination of relational and object-oriented databases. Traditional and advanced data types can be used to construct database management systems. These systems can connect to a company’s website and update records as needed. Database Approach The main purpose of a database is data storage that can be stored and retrieved when needed. A popular common language called structured query language (SQL) is used to store and retrieve data in relational database. This language enables the systems to run a report or modify data or remove the data from the database. A database management system (DBMS) controls all aspects of a database, this is not limited to the creation, maintenance, and use of database. The DBMS ensures proper applications are able to access the database. An important purpose of a DBMS is to maintain the data definitions (data dictionary) for all the data elements in the database. It also enforces data integrity and security measures. Data Models Data models provide a contextual framework and graphical representation that aid in the definition of data elements. In a relational database, the data model lays the foundation for the database and identifies important entities,

Generally processes can be described as I/O bound or CPU bound. I/O bound spends more time in doing I/O operations rather than other computations. CPU bound is contrast to I/O bound, which spends time doing all other

Cache memory is the fastest memory outside of the CPU, runs at 10-30 ns per access.

2. Using a word size of 64 bits, how much memory space is wasted by the leading 0 used to store 256 ASCII characters each in individual bytes?

CPU- the percentage of CPU time in the last second or whatever the update speed is set to.

Indexes are used to boost performance in a database. Finding an individual record or set of records most efficiently done by Index. Index key is the reference point where an index is an ordered arrangement of keys and pointers. Each key is appointed to the location of the data recognized by the key. For example: when we print out at the NEU library we have given our User ID so

-How many times something happens in a given period of time, normally expressed as per minute, per hour and per day.

Database systems provide efficient access to large volumes of data and are vital to the operation of many organizations.

A database is part of a larger system known as an information system, it helps with the collection, storage and retrieval of data. The database structure needs to be defined and its fields labeled properly for it to be an asset to the user.

Relational database contains data records that do not have a preset of relationships, permitting the user to define his or her relationship when accessing the data. Since users have much control over the data being accessed, relational databases can perform a variety of tasks. Such as defining the database; querying the database; adding, editing, and deleting data from the database; modifying the structure of the database; securing data from public access; communicating within the network; and exporting and importing data (Murthy, 2008).

Since 1960 and beyond the need for an efficient data management and retrieval of data has always been an issue due to the growing need in business and academia. To resolve these issues a number of databases models have been created. Relational databases allow data storage, retrieval and manipulation using a standard Structured Query Language (SQL). Until now, relational databases were an optimal enterprise storage choice. However, with an increase in growth of stored and analyzed data, relational databases have displayed a variety of limitations. The limitations of scalability, storage and efficiency of queries due to the large volumes of data [1] [2].

This is rate of which the reactant is used up or even the time measured for a product to form.

Attributes are used inside a table to display which ones linked to the primary key for instance if the customer ID was a primary key the one of the attributes could be customer name or in relation to sports type of sport.

Databases allow us to easily store and retrieve data in a purely digital format. The strength of this is that large amounts of data can be stored and retrieved with minimal effort on the part of the user. Opposed to manually flipping through files, one can quickly pull up the requested data through a computer program. Many systems that were conventionally paper and file based have been converted to a digital format which are now stored in one or more databases.

Microsoft Access is a database engine and development environment in one package. It is typically workstation-based, and designed to be easy to use, even for users