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c- information, a- data placed in context or summarized, b- centralized storehouse for all data definitions, d- organized collection of related data, e- includes data definitions and constraints, i- database management system, j- constraint, k- database application, l- distributed data stores that can be read from a single source, f- text and graphical displays that user interact with, h- supports 25-100 users and the user interface is accessible on the individual computer users, g- file processing system
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Midterm Exam
Name:_________________________
Exam Directions:
The exam is open book and notes are allowed
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Part 1 - Multiple Choice (25 points total)
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(a)Hierarchical Model: Here, this IMS was built by IBM in collaboration with Rockwell, and it becomes the major database system in the 1970s and 1980s. This model entailed the relation of files in a child -parent example, whereby at most one parent file hosted each child file.
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The other database models were developed similarly in stages. Peter Chen came up with the Entity-Relationship model in the year 1976. This was followed by the 1985 development of the Object-Oriented Database Models. In the 1990s, an important development occurred, which entailed the addition of object-orientation in relational models. This time frame also witnessed the addition of more application areas or units such as OLAP, data warehouse, the web, enterprise resource planning and even the internet. The year 1991 saw the creation of Microsoft Ships Acce ...Basic computer mcqs
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IFSM201-C806
Midterm Exam
Name:_________________________
Exam Directions:
The exam is open book and notes are allowed
You will have 2 days to complete the exam
Select the best answer for each question
Place your answers on your answer sheet
The completed answer sheet should be posted in the Assignment Folder by the assigned date and time.
Part 1 - Multiple Choice (25 points total)
Identify the choice that best completes the statement or answers the question.
____ 1. Ultra-mobile PCs are also called ____.
a. mini computers c. range computers
b. handheld computers d. frame computers
____ 2. A ____ is a collection of hardware and other devices that are connected together so that users can share
hardware, software, and data, as well as electronically communicate with each other.
a. computer bank c. data bank
b. database d. computer network
____ 3. Similar to the way an IP address or domain name uniquely identifies a computer on the Internet, a ____
uniquely identifies a Web page.
a. universal resource identifier (URI) c. uniform resource locator (URL)
b. Web ID (WID) d. Web resource identifier (WRI)
____ 4. Each place value in a binary number represents ____ raised to the appropriate power.
a. 0 c. 2
b. 1 d. 10
____ 5. A ____ is an electronic path over which data can travel.
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computer failure.
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____ port.
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a. database system c. application system
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(a) Update the number of stocks for specific items
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E.F. Codd (1970). Evolution of Current Generation Database Technologies. Communications of the ACM archive. Vol 13. Issue 6(June 1970
The database technology system can be traced back to a flat file, whose function was to keep data. These flat files surfaced in the 1960s and had many disadvantages. During the period 1968 to 1980, referred to as the Hierarchical error since the Hierarchical Database was developed, the IBM joined NAA to come up with GUAM, the first DBMS called the Information Management System (IMS). The following are the step by step evolution of the three major database systems since then, with regard to the specific model layers:
(a)Hierarchical Model: Here, this IMS was built by IBM in collaboration with Rockwell, and it becomes the major database system in the 1970s and 1980s. This model entailed the relation of files in a child -parent example, whereby at most one parent file hosted each child file.
(b)The Network Model was first developed by Charles Bachmann at Honeywell called the Integrated Data Store (IDS), which was considered fit for international use (standardization) in the year 1971 by the CODASYL body, meaning the Conference on Data Systems Languages. Here, files are perceived as members and owners, whereby each member may harbor many owners. Network Schema, Data Management Language and Sub-Schema are the three components associated to this model. The CODASYL DBTG was the most popular network model during those times.
(c) The Relational Database Model was developed in 1970 by E.F. Codd. He proposed the construction of this model, which saw to the onset of two major projects in the IBM's San Jose Lab. The model developed several branches or other forms of it like the INGRES, a University of California invention, which became widespread and the POSTGRES which was later developed into the Informix. The lab in San Jose had developed a System R, and this gradually shifted into the DB2, a relational model product. This model constitutes the use of instance and schema, with instance comprising of a table with columns and rows and the schema guiding on the structure used. It was wholly developed under the mathematical concept of set theory and the predicate logic. This model became stronger and fully effective in the 1980s, marked with the increase in the development of more relational based DBMS and the introduction of the SQL standard in the ISO and ANSI models.
The other database models were developed similarly in stages. Peter Chen came up with the Entity-Relationship model in the year 1976. This was followed by the 1985 development of the Object-Oriented Database Models. In the 1990s, an important development occurred, which entailed the addition of object-orientation in relational models. This time frame also witnessed the addition of more application areas or units such as OLAP, data warehouse, the web, enterprise resource planning and even the internet. The year 1991 saw the creation of Microsoft Ships Acce ...Basic computer mcqs
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The document contains 10 multiple choice questions about database management systems and design.
The questions cover topics such as:
- The order of elements in a data hierarchy (bit, byte, record, etc.)
- Characteristics of network data structures
- Problems with file management systems
- Components of a database management system
- Functions of a database
- Languages used to access database systems
The answers to the 10 questions are provided at the end.Cis 210 week 11 final exam strayer new
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This document discusses various topics related to software development strategies and models:
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This document discusses various software development strategies and models, including traditional in-house development, software as a service (SaaS), and outsourcing. It provides examples of different pricing and fee structures for outsourced software, such as fixed fee, usage-based, and subscription models. The document also covers topics like cloud computing, Web-based development, software licensing, and the software selection and evaluation process.Cis 210 week 11 final exam strayer new
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This document discusses various software development strategies and models, including traditional in-house development, software as a service (SaaS), and outsourcing. It provides examples of different pricing and fee structures for outsourced software, such as fixed fee, usage-based, and subscription models. The document also covers topics like cloud computing, Web-based development, application service providers (ASPs), and evaluation techniques for selecting software packages.2.2.1.4,2.2.2.2 until2.2.2.4
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This document provides information on database concepts through individual assignment questions and responses. It defines key terms like derived attribute, data flow diagram, database, DBMS, ER model, and SQL. It also discusses database utilities, DDL, DML, attributes, relationships, and the advantages of DBMS compared to traditional file processing systems. The responses provide detailed explanations of these concepts and distinguish between relational databases and tables.More from Dastan Kamaran (6)
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The document discusses various field properties in Microsoft Access including:
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Relationships between tables are critical in a relational database because they link separated data back together and impact how queries retrieve answers. There are three main relationship types: one-to-many, which is most common; many-to-many, used in transaction and student databases; and one-to-one, which is rare. A primary key uniquely identifies records in a table and cannot be duplicated or contain null values. Foreign keys in one table reference the primary key of another table to represent relationships between them. Relationships are depicted in entity diagrams by drawing lines between matching keys and labeling the "one" side with 1 and the "many" side with .Field properties
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The document discusses various field properties in Microsoft Access including:
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2. Input mask - Allows controlling data entry format using character placeholders.
3. Validation rule - Specifies requirements for data entered using expressions. Validation text displays error messages.
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Relationships between tables are critical in a relational database because they link data separated across tables and impact how queries retrieve answers. There are three main relationship types: one-to-many, which is most common; many-to-many, used in transaction and student databases; and one-to-one, which is rare. A primary key uniquely identifies records in a table and cannot be duplicated or contain null values. Foreign keys in one table reference the primary key of another table to represent relationships. Relationships are defined by matching keys between tables which must have the same data type and field size.Oop lecture1-chapter1(review of java)
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This document outlines the syllabus for an Object Oriented Programming course in Java. The course aims to teach students the principles of OOP using Java, including classes, objects, inheritance, polymorphism, exceptions handling, and more. It covers topics like Java basics, GUI programming, JDBC, collections, and multithreading. The course objectives are to enable students to write Java programs that solve problems and demonstrate good OOP skills. The content includes revising Java principles, learning about classes, interfaces, packages and more.Oop lecture1-chapter1(review of java)
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