Explain and analyze the structure and operation databases and database management systems and to describe and assess the tools and techniques of business information system development.
Select an information system from your place of employment
Explain and analyze the structure and operation database(s) and/or database management system(s) of the selected information system
Describe and assess the tools and techniques of business information system development used for this system. This will take some research on your part and some creativity.
Use the Case Analyses headings listed below, not a paper narrative
Step 1: System Definition
Define the system, its role in the organization
Step 2: Components Analysis
Analyze and document the systems components including databases and application components. You may need to make some inferences to fill in gaps. Clearly label what is inference and what is factual. Do not be afraid to assume, but clearly state the assumptions you are making. You should make assumptions on the basis of your knowledge learned from the chapters, and they should be consistent with the facts about the system, even though your facts may be somewhat limited.
The capacity of a metal to twist plastically and to assimilate vitality in the process before break is named sturdiness. The accentuation of this definition ought to be put on the capacity to ingest vitality before break. Review that malleability is a measure of how much something disfigures plastically before crack, however on the grounds that a material is bendable does not make it intense. The way to sturdiness is a decent mix of quality and flexibility. A material with high quality and high malleability will have more durability than a material with low quality and high pliability. Thusly, one approach to quantify durability is by computing the region under the pressure strain bend from a ductile test. This esteem is just called "material durability" and it has units of vitality per volume. Material sturdiness compares to a moderate retention of vitality by the material. There are a few factors that affect the sturdiness of a material. These factors are: prepare (rate of stacking). Temperature. Indent impact. A metal may have tasteful sturdiness under static loads yet may flop under powerful loads or effect. When in doubt malleability and, along these lines, durability diminish as the rate of stacking increments. Temperature is the second factor to impact its sturdiness. As temperature is brought down, the malleability and durability additionally diminish. The third factor is named indent impact, needs to due with the dispersion of stress. A material may show great strength when the connected pressure is uniaxial; yet when a multiaxial push state is created because of the nearness of an indent, the material probably won't withstand the synchronous versatile and plastic distortion in the different ways. There are a few standard sorts of durability test that create information for particular stacking conditions as well as segment configuration approaches. Three of the durability properties that will be talked about in more detail are: Effect strength. Indent sturdiness. Break sturdiness. Effect Toughness: The effect sturdiness (AKA Impact quality) of a material can be resolved with a Charpy or Izod test. These tests are named after their designers and were produced in the mid 1900's before break mechanics hypothesis was accessible. Effect properties are not specifically utilized in break mechanics estimations, but rather the efficient effect tests keep on being utilized as a quality control technique to evaluate indent affectability and for looking at the relative strength of designing materials. The two tests utilize distinctive examples and techniques for holding the examples, yet the two tests make utilization of a pendulum-testing machine. For the two tests, the example is broken by a solitary over-burden occasion because of the effect of the pendulum. A stop pointer is utilized to record how far the pendulum swings back up in the wake of breaking the example. The effect durability of a metal is controlled by estimating the vitality consumed in the break of the example. This is essentially gotten by taking note of the stature at which the pendulum is discharged and the tallness to which the pendulum swings after it has struck the example . The tallness of the pendulum times the heaviness of the pendulum delivers the potential vitality and the distinction in potential vitality of the pendulum toward the begin and the finish of the test is equivalent to the ingested vitality. Since strength is significantly influenced by temperature, a Charpy or Izod test is frequently rehashed various occasions with every example tried at an alternate temperature. This delivers a diagram of effect strength for the material as an element of temperature. An effect sturdiness versus temperature chart for a steel is appeared in the picture. It can be seen that at low temperatures the material is more fragile and effect sturdiness is low. At high temperatures the material is more malleable and effect sturdiness is higher. The change temperature is the limit amongst weak and malleable conduct and this temperature is regularly a critical thought in the choice of a material. Crack Toughness: Crack sturdiness means that the measure of pressure required to proliferate a prior imperfection. It is an essential material property since the event of defects isn't totally avoidable in the preparing, manufacture, or administration of a material/part. Blemishes may show up as splits, voids, metallurgical considerations, weld deserts, plan discontinuities, or some mix thereof. Since architects can never be absolutely certain that a material is sans defect, usually practice to expect that an imperfection of some picked size will be available in some number of parts and utilize the straight versatile break mechanics (LEFM) way to deal with plan basic segments. This approach utilizes the imperfection size and highlights, part geometry, stacking conditions and the material property called crack durability to assess the capacity of a segment containing a defect to oppose break. A parameter called the pressure power factor (K) is utilized to decide the break durability of generally materials. A Roman numeral subscript demonstrates the method of crack and the three methods of break are delineated in the picture to one side. Mode I break is the condition in which the split plane is ordinary to the course of biggest elastic stacking. This is the most usually experienced mode and, accordingly, for the rest of the material we will think about KI. The pressure power factor is an element of stacking, break estimate, and basic geometry. The pressure power factor might be spoken to. Part of Material Thickness: Examples having standard extents yet extraordinary outright size create diverse qualities for KI. This outcomes in light of the fact that the pressure states neighboring the blemish changes with the example thickness (B) until the point that the thickness surpasses some basic measurement. Once the thickness surpasses the basic measurement, the estimation of KI turns out to be generally consistent and this esteem, KIC , is a genuine material property which is known as the plane-strain break strength. The connection between push force, KI, and crack sturdiness, KIC, is like the connection amongst stretch and ductile pressure. The pressure power, KI, speaks to the level of "worry" at the tip of the split and the crack sturdiness, KIC, is the most noteworthy estimation of stress force that a material under quite certain (plane-strain) conditions that a material can withstand without break. As the pressure power factor achieves the KIC esteem, temperamental break happens. Similarly as with a material's other mechanical properties, KIC is regularly revealed in reference books and different sources. Plane Strain: A state of a body in which the removals of all focuses in the body are parallel to a given plane, and the estimations of postulations relocations don't rely upon the separation opposite to the plane. Plane Stress: A state of a body in which the condition of pressure is to such an extent that two of the essential burdens are constantly parallel to a given plane and are steady the typical way. Plane-Strain and Plane-Stress: At the point when a material with a break is stacked in pressure, the materials create plastic strains as the yield pressure is surpassed in the locale close to the split tip. Material inside the break tip pressure field, arranged near a free surface, can disfigure along the side (in the z-course of the picture) in light of the fact that there can be no anxieties typical to the free surface. The condition of pressure keeps an eye on biaxial and the material cracks in a trademark flexible way, with a 45o shear lip being shaped at each free surface. This condition is designated "plane-stress" and it happens in generally thin bodies where the worry through the thickness can't shift considerably because of the thin area. Be that as it may, material far from the free surfaces of a moderately thick part isn't allowed to distort along the side as it is obliged by the encompassing material. The pressure state under these conditions tends to triaxial and there is zero strain opposite to both the pressure pivot and the bearing of break proliferation when a material is stacked in strain. This condition is designated "plane-strain" and is found in thick plates. Under plane-strain conditions, materials act basically flexible until the point that the crack pressure is come to and after that fast break happens. Since practically no plastic distortion is noticed, this mode break is named fragile crack. Plane-Strain Fracture Toughness Testing: When playing out a crack sturdiness test, the most well-known test example designs are the single edge indent twist (SENB or three-point twist), and the smaller pressure (CT) examples. From the above talk, plainly an exact assurance of the plane-strain break strength requires an example whose thickness surpasses some basic thickness (B). Testing has demonstrated that plane-strain conditions by and large win when: At the point when a material of obscure break sturdiness is tried, an example of full material segment thickness is tried or the example is estimated in light of a forecast of the crack durability. On the off chance that the crack sturdiness esteem coming about because of the test does not fulfill the prerequisite of the above condition, the test must be continued utilizing a thicker example. Notwithstanding this thickness figuring, test details have a few different prerequisites that must be met, (for example, the extent of the shear lips) before a test can be said to have brought about a KIC esteem. At the point when a test neglects to meet the thickness and other test necessity that are set up to protect plane-strain condition, the crack strength esteems delivered is given the assignment KC. Here and there it isn't conceivable to deliver an example that meets the thickness prerequisite. For instance when a generally thin plate item with high durability is being tried, it probably won't be conceivable to create a thicker example with plain-strain conditions at the break tip. Plane-Stress and Transitional-Stress States: For situations where the plas>GET ANSWER