studies &research Information technology department Database systems Report on: (Comparison between Relational database & object oriented database) By: Mohammed Hussein Mahmoud Mustafa khedr To: Dr. Saad Darwish Introduction A database is a means of storing information in such a way that information can be retrieved from it. Thus a database is typically a repository for heterogeneous but interrelated pieces of information. Often a database contains more than one table. Codebooks and dictionaries
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your database‚ it is important to take time to design your database. A good database design is the keystone to creating a database that foes what you want it to do effectively‚ accurately‚ and efficiently. The first step in designing a Microsoft Access database is to determine the purpose of the database and how it’s to be used. You need to know what information you want from the database. Form that‚ you can determine what subjects you need to store facts about (the tables) and what facts
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taking advantage of the technology today. From School to offices and now in Healthcare relate especially hospitals and even clinics. Upgrading from manual system to automated not only lessen paper consumption but also gives assurance of the safety of information that will be kept properly and well-organized. Patient record is a collection of documents that provides an account of each episode in which a patient visited or have treatment and received care from health care facility. The record is confidential
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An ‘invitation to treat’ refers to a term in contract law. Importantly‚ it is not the same as an ‘offer’ and it is crucial to distinguish between the two concepts. In order for a binding contract to be formed‚ there must be an ‘offer’ and an ‘acceptance’ of that offer. An invitation to treat is sometimes mistaken for an offer. There are many similarities between an invitation to treat and offer‚ so making the distinction can be difficult. If the validity of your contract turns on this distinction
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###What are Genealogy Records? Genealogy records are official records of personal circumstances related to a person’s family history. Genealogy records are also known as historical records‚ family history‚ ancestry history‚ lineage‚ family line‚ bloodline or line of descent. Tracing a family line back in history can be an onerous task as it includes considering not only official vital records registries‚ but also genetical research‚ and going through data available in tax reports‚ newspaper archives
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ISM 6215 - Business Database Systems I Fall 2013 Home Work – 1 (Marks 100) Question 1 - Contrast the following terms. Give one example of each 1. Degree versus cardinality of relationship 2. Required versus optional attributes 3. Data dependence versus data independence 4. Structured versus unstructured data (4*2.5 =10 marks) Answer 1 - Degree; cardinality. The degree (of a relationship) is the number of entity types that participate in that relationship‚ while cardinality is a
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Standardized tests have historically been used as measures of how students compare with each other or how much of a particular curriculum they have learned. Increasingly‚ standardized tests are being used to make major decisions about students‚ such as grade promotion or high school graduation‚ and schools. More and more often‚ they also are intended to shape the curriculum and instruction. Students across America have had to repeat classes because of the way standardized tests are used
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DATABASE FOR SCHEDULING Joshua Crisp Prof. Raman Marwah CIS210 11/25/2012 There are many advantages of creating a database for scheduling purposes. Having a database will allow trainers to see what courses they have coming up and their supervisors will also see what their workload is. Being part of a corporation that is expanding needs to be able to adapt to changes and having a database for scheduling will help. First we will have to look at what is needed to create a scheduling database
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DATABASE A database is an organized collection of data. The data is typically organized to model aspects of reality in a way that supports processes requiring information. (1) Often abbreviated DB‚ a database is basically a collection of information organized in such a way that a computer program can quickly select desired pieces of data. You can think of a database as an electronic filing system. Traditional databases are organized by fields‚ records‚ and files. A field is a single piece of information;
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Normalization is a method for organizing data elements in a database into tables. Normalization Avoids • Duplication of Data – The same data is listed in multiple lines of the database • Insert Anomaly – A record about an entity cannot be inserted into the table without first inserting information about another entity – Cannot enter a customer without a sales order • Delete Anomaly – A record cannot be deleted without deleting a record about a related entity. Cannot delete a sales order
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