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Amwoga Khalwale What is a Key in DBMS? Key in DBMS is an attribute or set of attributes which helps you to identify a row(tuple) in a relation(table). They allow you to find the relation between two tables. Keys help you uniquely identify a row in a table by a combination of one or more columns in that … Read more
Electromagnetic radiation is transmitted in waves or particles at different wavelengths and frequencies. This broad range of wavelengths is known as the electromagnetic spectrum EM spectrum). The spectrum is generally divided into seven regions in order of decreasing wavelength and increasing energy and frequency. The common designations are radio waves, microwaves, infrared (IR), visible light, ultraviolet (UV), … Read more
Statement This JDBC API interface is used for static SQL statements at run time. There is no specific protocol in statement interface. The statement interface does not allow accepting parameters at runtime. This interface is used when the SQL query is required to be executed only once. The performance of the statement interface is comparatively … Read more
What Is CHAR? What is VARCHAR? Difference Between CHAR And VARCHAR In Tabular Form CHAR STRING DATA TYPE VARCHAR STRING DATA TYPE Char are fixed length strings with a set length specified. Varchar are variable length strings with a maximum length specified. CHAR datatype is used to store character string of fixed length. … Read more
In the military history and firearm development, both MAC-10 and MAC-11 have actually etched their place. Born from the innovative mind of Gordon B. Ingram, these compact submachine guns have most similar features with a few nuanced differences that set them apart. What is MAC 10? The “Military Armament Corporation Model 10″ or MAC 10 … Read more
Generally, for the purposes of weighing, grams, pounds or kilograms are used as units of expression, but when extremely heavy objects are to be considered, their weight will have to be expressed as ton or metric ton. Ton is the unit of measurement that is primarily used as a unit of weight. The word ton … Read more
Job description and Job specification are two important components of job analysis information. The two describe a job fully and guide both employer and employee on how to go about the whole process of recruitment and hiring. Both data sets are typically relevant in matching between job and talent, evaluate performance and analyze training needs … Read more
What Is Asphalt? Asphalt is a sticky, black, highly viscous liquid or semi-solid form of petroleum. It can also be described as a mixture of aggregates, binder and filler, used for constructing and maintaining roads, parking areas, railway tracks, ports, airport runways, bicycle lanes, sidewalks and also play- and sport areas. Aggregates used for asphalt mixtures could be … Read more
When Consumers go to the grocery store, they are confronted with a variety of items from which to choose from. One of the most commonly purchased items from the beef section is ground beef. Because of its functionality in a multitude of different entrée items, ground beef is the largest single beef item sold (by … Read more
The Crystal Field Theory (CFT) is a model for the bonding interaction between transition metals and ligands. It describes the effect of the attraction between the positive charge of the metal cation and negative charge on the non-bonding electrons of the ligand. When the ligands approach the central metal ion, the degeneracy of electronic orbital … Read more