Define relational database. Why has it been predicted that the relat.pdf

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Define relational database. Why has it been predicted that the relational database will be the mainstay for organizations in the years ahead? Solution It is a collection of data items that are organized as a set of formally-described tables from which data can be accessed or reassembled in many different ways without having to reorganize those database tables. It it been predicted that the relational database will be the mainstay for organizations in the years ahead. Consumers, every day, generate unstructured social media and click stream data that offer valuable insights if companies can access it. Also the amount of data is growing so fast that traditional database are not able to keep up without additions to the data warehouse but that will make such arrangement costly. Due to these restrictions, companies that rely solely on relational databases.

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Curious about the role of data warehouses in a BI dashboard tool? Wondering how they enhance data integration and visualization? Our blog sheds light on the power of data warehouses in empowering your BI dashboard and business analytics tools. Discover the benefits, architectural considerations, and best practices that will propel your analytics game to new heights. Visit Grow.com for more information.

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Relational database systems have been the standard storage system over the last forty years. Recently, advancements in technologies have led to an exponential increase in data volume, velocity and variety beyond what relational databases can handle. Developers are turning to NoSQL which is a non- relational database for data storage and management. Some core features of database system such as ACID have been compromised in NOSQL databases. This work proposed a hybrid database system for the storage and management of extremely voluminous data of diverse components known as big data, such that the two models are integrated in one system to eliminate the limitations of the individual systems. The system is implemented in MongoDB which is a NoSQL database and SQL. The results obtained, revealed that having these two databases in one system can enhance storage and management of big data bridging the gap between relational and NoSQL storage approach.

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Week 4 Lecture 1 - Databases and Data Warehouses Management of Information Systems Databases and Data Warehouses The impact of database technology on how business is conducted today cannot be overemphasized. This technology has enabled an information industry with comprehensive influences on businesses and individuals. Databases store data that populate web pages and other interactive networked technologies. Search engines, e-commerce, and social media would not exist without databases. With database support, larger tasks can be accomplished by fewer people. Effective data management is the principal benefit of IT. Database management systems (DBMSs) enable the fast creation of databases and manipulation of data on an aggregate basis or down to the smallest detail for business purposes. Databases support most web pages and other interactive networked technology. DBMSs support target marketing, financial management, decision-making, distribution of goods and services, customer service, and other activities. It is imperative, in the age of data mining, and “big data,” for knowledge workers to understand how databases work and how data are used operationally and strategically in business management. Database analysis and management skills are mandatory in the marketplace. IT professionals develop and implement databases. However, data is essential to the non-technical professional who uses the data for decision making regarding accounting, marketing, logistics, senior management, and other functional areas. The relational database model is common. However, data can be organized in other ways. “Big Data” prompted the use of other database models. “NoSQL” database models are non-relational and do not require SQL to retrieve data. NoSQL databases can be structured by object, document, key-value, graph, column, and other possibilities In relational databases, a primary key is a field in a table that contains a unique value used to differentiate between rows of data. The primary key is usually a number, or a computer generated globally unique identifier (GUID). Sometimes a composite key is used differentiate between table rows. A composite key is a combination of the values in two or more fields in a table that when combined are unique in the table and serve as a primary key. A foreign key is used to link data between two tables. A foreign key in a table is the primary key of a related table. Databases contain different types of fields. Some types are, number, text, image, video, audio, geographical coordinates, and others. If a number is not used for mathematical calculations, it is best to assign a text type to it in a database to avoid the need to convert it from a number to a string after retrieval. SQL is a popular query language used to retrieve data from relational databases. SQL can be used to retrieve data from more than one table by use of a “join.” A join query retrieves data from rows in two or more tables, where the value of the foreign ...

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Dividing a linked list into two sublists of almost equal sizes a. Add the operation divideMid to the class linkedListType as follows: Consider the following statements: unorderedLinkedList myList; unorderedLinkedList subList; Suppose myList points to the list with elements 34 65 27 89 12 (in this order). The statement: myList.divideMid(subList); divides myList into two sublists: myList points to the list with the elements 34 65 27, and subList points to the sublist with the elements 89 12. b. Write the definition of the function template to implement the operation divideMid. Also, write a program to test your function. The header files linkedList.h and unorderedLinkedList.h are supplied. Your test program should produce output similar to this: Turn in: linkedList.h with modifications Your test program. (C++) Required code is below: #ifndef H_UnorderedLinkedList #define H_UnorderedLinkedList #include \"linkedList.h\" using namespace std; template class unorderedLinkedList: public linkedListType { public: bool search(const Type& searchItem) const; //Function to determine whether searchItem is in the list. //Postcondition: Returns true if searchItem is in the // list, otherwise the value false is // returned. void insertFirst(const Type& newItem); //Function to insert newItem at the beginning of the list. //Postcondition: first points to the new list, newItem is // inserted at the beginning of the list, // last points to the last node in the // list, and count is incremented by 1. void insertLast(const Type& newItem); //Function to insert newItem at the end of the list. //Postcondition: first points to the new list, newItem // is inserted at the end of the list, // last points to the last node in the // list, and count is incremented by 1. void deleteNode(const Type& deleteItem); //Function to delete deleteItem from the list. //Postcondition: If found, the node containing // deleteItem is deleted from the list. // first points to the first node, last // points to the last node of the updated // list, and count is decremented by 1. }; template bool unorderedLinkedList:: search(const Type& searchItem) const { nodeType *current; //pointer to traverse the list bool found = false; current = this->first; //set current to point to the first //node in the list while (current != NULL && !found) //search the list if (current->info == searchItem) //searchItem is found found = true; else current = current->link; //make current point to //the next node return found; }//end search template void unorderedLinkedList::insertFirst(const Type& newItem) { nodeType *newNode; //pointer to create the new node newNode = new nodeType; //create the new node newNode->info = newItem; //store the new item in the node newNode->link = this->first; //insert newNode before first this->first = newNode; //make first point to the //actual first node this->count++; //increment count if (this->last == NULL) //if the list was empty, newNode is also //the last node in the list this->l.

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what does it takes to be a living organ? Assignment Please answer the following DB Focus your discussion on the following Make comparisons between living things and nonliving things that have some of the characteristics that define life Compare the following pairs and explain what the differences are using the 8 criteria A rock to a snail A rock to a tree A dog to a TV Explain why electricity is sometimes called live or discuss some of the characteristics fire shares with living things (it can grow, it metabolizes, and so on) Solution Characteristics Living Things Non Living Things Shape and Size They possess definite shape and sixe No definite shape and size Cellular structure They consists of cells They have no cells Organisation Have a definite organisation. There are tissues, organs, organ systems which work as an integrated unit No organisation Growth They show growth No growth Movement They show movement or locomotion No movement Nutrition Need food for energy Need no food Respiration All living organism respire.In order to obtain energy, glucose is combine with oxygen in cells. Need no respiration Excretion Excrete unwanted materials from the body Do not show excretion Metabolism Anabolic and catabolic reactions takes place. No metabolic changes takes place Response Show response to stimuli Show no response to stimuli Reproduction Reproduce young ones of their own kind Show no reproduction Differentiation Show differentiation during development No process of differentiation takes place Adaptations Living things show adaptations to changing environmental conditions for better survival Do not show any adaptations Life span Living things have some life span. They have no life span Death Living beings will die after certain period of life. Death doesn’t exsist in these things. They are broken down or destroyed by external forces Examples Human, birds, tree etc. Car, pen, chair etc 2. Eight criteria of life are: i) These all above criteria present into snail but absent in rock. ii) These above eight criteria present in tree but absent in rock. iii) These above criteria present in dog but absent in TV. 3. Electricity is sometimes called live because it uses a shock that can go through our whole body and shock us. For example: 1. Reflex arc. 2. An electrical signal always generate from our heart and maintains our blood circulation. Characteristics Living Things Non Living Things Shape and Size They possess definite shape and sixe No definite shape and size Cellular structure They consists of cells They have no cells Organisation Have a definite organisation. There are tissues, organs, organ systems which work as an integrated unit No organisation Growth They show growth No growth Movement They show movement or locomotion No movement Nutrition Need food for energy Need no food Respiration All living organism respire.In order to obtain energy, glucose is combine with oxygen in cells. Need no respiration Excretion Excrete unwanted materials from.

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The enrollment in a certain course is 10% first year students, 30% sophomores, 40% juniors, and 20% seniors. Data from previous semesters shows that the likelihood for receving an A in the course is 0.2 for first-year students, 0.4 for sophomores, 0.3 for juniors, and 0.1 for seniors. Find the probability that at student who receives an A is a sophomore. Solution Probability will be 0.4* 0.3 =0.12.

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Summarize the main characteristic of insects Solution 1.Insects are cold blooded and have six legs, 3 main body parts and an exoskeleton. 2. Insects lay eggs and many have four wings. 3.Insects have a tough defensive mechanism known as exoskeleton. Because they lack backbones, they are invertebrates. 4.An insect\'s body has three major body elements, inclusive of a head, thorax and stomach. 5.Insects can live on land, inside the water or both. Most insects have antennae that permit them to the touch, flavor, pay attention and smell. These antennae assist them for meals and danger from predators. 6.Some bugs undergo a entire metamorphosis, meaning they grow into completely one of a kind creatures than they had been in their larval stage. Insects that undergo this change include butterflies, real flies and beetles. 7.Insects that go through an incomplete metamorphosis appearance very just like adults of the identical species, most effective smaller. Cockroaches and grasshoppers undergo an incomplete metamorphosis..

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Put the following taxonomic hierarchy of classification groups in order from most general (includes the greatest number of organisms) to most specific (includes the least number of organisms): genus, family, class, phylum, kingdom, domain, species and order. Then, write the scientific names of the groups humans belong to. Cite your source of information. Solution Starting from the most general classification group :- Human belongs to the following group:-.

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- -0+00- 1+00_ 1+40_ 2 +00 2+40 3+00 Solution1) Chang.pdf

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1: List the basic steps in securing an operating system. Assume that the O.S. is being installed for the first time on new hardware. Solution An OS allows different users to access different resources in a shared way. The OS needs to control the sharing and provide an interface to allow the access. Each layer is impotent to attack from below if the lower layers are not secured appropriately. The top four assessments for securing os are: Most important thing in securing operating system is to secure a base operating system. The following are the simple steps:.

1 List the basic steps in securing an operating system. Assume that.pdf

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