Republic of the Philippines ILOILO STATE COLLEGE OF FISHERIES BAROTAC NUEVO CAMPUS Barotac Nuevo‚ Iloilo SALES INFORMATION SYSTEM OF ISCOF BNC CORPORATION This is presented to Instructor Guy V. Arellano in partial fulfilment In our subject System Analysis and Design In our course Bachelor of Science in Information Technology Presented by: Labelia Sosarno Esmailyn Dominguez Lelibeth Dula -ogon Donna Paez Wilma Casuyon Joey Calanao Reymart Jhon Sumbo Chave Melchor Alarba
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entities and the _______________ among entities. A. relationships Database management packages based on the _______________ model can link data elements from various tables to provide information to users. B. relational Early mainframe DBMS packages used the _______________ structure‚ in which all records are dependent and arranged in multilevel structures‚ consisting of one root record and any number of subordinate levels. C. hierarchical In a(n) _______________ database structure
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database‚ instead the database structure and its data characteristics are defined in the data dictionary component of the DBMS. Therefore the programs accessing the database become independent of the database) 4. Database integrity (because data duplication or data redundancy is minimized as a result of relating the segments or records) 5. Efficiency (the hierarchical DBMS file storage organization and access methods are based on the new hierarchal database structure which is much faster than
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schema – Defines application and user views – Monitors and tunes DBMS performance (defines/modifies internal schema) – Loads and reformats the database – Responsible for security and reliability Data Dictionary – Metadata • The dictionary or catalog stores information about the database itself • This is data about data or ‘metadata’ • Almost every aspect of the DBMS uses the dictionary The dictionary holds: • Descriptions
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concerning RF behavior. Calculations Step 4 (dBm of 1W): ____30 dBm = 1 W_____ Step 11 (max gain): ____9.538 dB________ Step 15 (.11g free space loss): ____0.00001 km______ Step 17 (.11a free space loss): _____0 km___________ Step 19 (link budget): _____9.439__________ Summary of RF Behavior In your own words‚ summarize what you have learned concerning RF behavior from your calculations‚ readings‚ and research. Begin section here dBm measures the power of a signal and the distance
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Advantages of Database Management Systems Database Management System (DBMS) aids in storage‚ control‚ manipulation and retrieval of data. This article lists the advantages of database management systems. Database is a software program‚ used to store‚ delete‚ update and retrieve data. A database can be limited to a single desktop computer or can be stored in large server machines‚ like the IBM Mainframe. There are various database management systems available in the market. Some of them are Sybase
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CourseInstance table has a foreign key which links its rows back to the Courses table Primary Key Foreign Key JDBC Northwestern Polytechnic University Dr. Nels Vander Zanden 1 SQL Structured Query Language • Standard language used to communicate with a DBMS • Language is divided into two parts o Data Definition Language (DDL) -- used to define tables in DB o Data Manipulation Language (DML) – use to manipulate data in tables Common SQL Commands (that are part of DDL) • • • • CREATE DATABASE CREATE TABLE
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HISTORY OF DATABASE MANAGEMENT SYSTEM With the progress in technology in the areas of processors‚ computer memory‚ computer storage and computer networks‚ the sizes‚ capabilities‚ and performance of databases and their respective DBMSs have grown in orders of magnitudes. The development of database technology can be divided into three eras based on data model or structure: navigational‚ SQL/relational‚ and post-relational. The two main early navigational data models were the hierarchical model
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ECO FRIENDLY DATABASE Varun Chauhan MBA Student‚ Delhi Institute of Advanced Studies Pranav Kharbanda MBA Student‚ Delhi Institute of Advanced Studies Vindhya Chhabra B.Tech Student‚ Delhi Technical University (IT) Sumit Jain MBA Student‚ Delhi Institute of Advanced Studies ECO FRIENDLY DATABASE ABSTRACT 2. GREEN DATABASE Database should utilize several modern hardware capabilities. The purpose
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Management Information Systems MANAGING THE DIGITAL FIRM‚ 12TH EDITION GLOBAL EDITION Chapter 6 FOUNDATIONS OF BUSINESS INTELLIGENCE: DATABASES AND INFORMATION MANAGEMENT Management Information Systems CHAPTER 6: FOUNDATIONS OF BUSINESS INTELLIGENCE: DATABASES AND INFORMATION MANAGEMENT Learning Objectives • Describe how the problems of managing data resources in a traditional file environment are solved by a database management system • Describe the capabilities and value of a database
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