1. Explain DML, DDL, DCL and TCL statements with examples? Answer: DDL Data Definition Language (DDL) statements are used to define the database structure or schema. Some examples: * CREATE - to create objects in the database * ALTER - alters the structure of the database * DROP - delete objects from the database * TRUNCATE - remove all records from a table, including all spaces allocated for the records are removed * COMMENT - add comments to the data dictionary
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SQL Facts SQL stands for Structured Query Language SQL is pronounced “sequel” SQL is declarative language SQL is used to access & manipulate data in databases Top SQL DBs are MS SQL Server, Oracle, DB2, and MySQL Database Definitions RDBMS (Relational Database Management System) – Software that stores and manipulates data arranged in relational database tables. Table – A set of data arranged in columns and rows. The columns represent characteristics of stored data and the rows represent actual data
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of Database Systems Laboratory Manual1 Rajshekhar Sunderraman Georgia State University August 2010 1 To accompany Elmasri and Navathe, Fundamentals of Database Systems, 6th Edition, Addison-Wesley, 2010. 2 Preface This laboratory manual accompanies the popular database textbook Elmasri and Navathe, Fundamentals of Database Systems, 6th Edition, Addison-Wesley, 2010. It provides supplemental materials to enhance the practical coverage of concepts in an introductory database systems
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organized. She picks up the applications, one at a time, and then checks through the databases (computer databases) that whether the person has already applied for a pass before or not. Since applying for a pass requires a lot of details to be submitted and a thorough background check, the details of the applications which are issued passes are recorded in a database. If the person does not exist, then a new database entry in that person’s name is created. And, based on the results from the security
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Database Environment Smith Consulting is a firm that focuses building applications for their clients. One of the biggest core values within this company is to maintain the security of the data that they for which this company builds applications. ("Smith Consulting Intranet", 2015) The main focus of this company is the creation of efficient financial applications as well as other functional applications as requested. The company has about 350 employees that currently working for them across
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require sophisticated software with many integrated modules that can track clients across various organizations and care providers. Community based organizations involved in human service delivery activities need effective software with a centralized database to track client demographics, services received, client progress, and outcomes. Software should be easy to use and require minimal staff training to implement the use of the software. There are two software applications that are being compared and
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INSY 5337 Data Warehousing – Term Paper NoSQL Databases: An Introduction and Comparison between Dynamo, MongoDB and Cassandra Authored ByNitin Shewale Aditya Kashyap Akshay Vadnere Vivek Adithya Aditya Trilok Abstract Data volumes have been growing exponentially in recent years, this increase in data across all the business domains have played a significant part in the analysis and structuring of data. NoSQL databases are becoming popular as more organizations consider it as a feasible option
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Steven Lee 1916 County Road Apt. 103 District Heights, MD 20747 C: (240) 353-4086/ Weback13@gmail.com[->0] Objective Fast learner looking to establish a stable career. My professional experience, positive out look and energetic spirit is a sure asset to any work place. The ability to multi task, communicate well, and interact with a range of personalities are all advantages I have mastered. Professional Experience WMATA, Bladensburg, Washington DC (December 2013-May 2014) Worked as a
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Security Threats to Fundraising Organizations Introduction The advantages for fundraising organizations when integrating donor databases with their website are endless. Moreover, the security risk considerations from accessing online databases are an exponentially higher risk. These risks exist whether they are a small fundraising organization comprised mostly of volunteers or a Fortune 500 corporation. These risks fortunately, can
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parts used, costs, service dates, owner, and so on. Files are also kept to track inventory, purchasing, billing, employees’ hours, and payroll. You have been contacted by the manager of one of the centers to design and implement a computerized database system. Given the preceding information, do the following: a. Indicate the most appropriate sequence of activities by labeling each of the following steps in the correct order. 1. Obtain a general description of company operations 2. Interview
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