Database Management Systems
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Resume of Dr. Michael J. Bisconti
Table of Contents This file contains, in order: Time Savers Experience Matrix Resume _________________________ 1 Time Savers There are a number of things we can do to save everyone’s time. In addition to resume information there are a number of common questions that employers and recruiters have. Here is an FAQ that addresses these questions. (We may expand this FAQ over time.) Frequently Asked Questions 1099 Multiple Interviewers Severance Pay Contract End Date Multiple Interviews Technical Exam Contract Job Need/Skill Assessment Interview Temporary Vs. Permanent Contract Rate Payment Due Dates U.S. Citizenship Drug Testing Permanent Job W2 Face-to-face Interview Phone Interview Word Resume Job Hunt Progress Salary Are you a U.S. citizen? Yes. Do you have a Word resume? Yes, and I also have an Adobe PDF resume. Do you prefer temporary (contract) or permanent employment? Neither, since, in the end, they are equivalent. Will you take a drug test? 13 drug tests taken and passed. Do you work 1099? Yes, but I give W2 payers preference. Do you work W2? Yes, and I work 1099 as well but I give W2 payers preference. How is your job search going? See 1.2 Job Hunt Progress. What contract rate do you expect? $65 to $85/hr. W2 and see the 2.5 Quick Rates Guide. What salary do you expect? 120k to 130k/yr. and see the 2.5 Quick Rates Guide. When do you expect to be paid? Weekly or biweekly and weekly payers will be given preference. Will you do a face-to-face interview? Yes, but I prefer a Skype or equivalent interview because gas is so expensive and time is so valuable. -
An Overview of the Usage of Default Passwords (Extended Version)
An Overview of the Usage of Default Passwords (extended version) Brandon Knieriem, Xiaolu Zhang, Philip Levine, Frank Breitinger, and Ibrahim Baggili Cyber Forensics Research and Education Group (UNHcFREG) Tagliatela College of Engineering University of New Haven, West Haven CT, 06516, United States fbknie1, [email protected],fXZhang, FBreitinger, [email protected] Summary. The recent Mirai botnet attack demonstrated the danger of using default passwords and showed it is still a major problem in 2017. In this study we investigated several common applications and their pass- word policies. Specifically, we analyzed if these applications: (1) have default passwords or (2) allow the user to set a weak password (i.e., they do not properly enforce a password policy). In order to understand the developer decision to implement default passwords, we raised this question on many online platforms or contacted professionals. Default passwords are still a significant problem. 61% of applications inspected initially used a default or blank password. When changing the password, 58% allowed a blank password, 35% allowed a weak password of 1 char- acter. Key words: Default passwords, applications, usage, security 1 Introduction Security is often disregarded or perceived as optional to the average consumer which can be a drawback. For instance, in October 2016 a large section of the In- ternet came under attack. This attack was perpetuated by approximately 100,000 Internet of Things (IoT) appliances, refrigerators, and microwaves which were compromised and formed the Mirai botnet. Targets of this attack included Twit- ter, reddit and The New York Times all of which shut down for hours. -
Appendix E: an Overview of the Network Data Model
Elmasri_APPC Page 1 Monday, April 3, 2006 3:40 PM An Overview of the APPENDIXE Network Data Model This appendix provides an overview of the network data model.1 The original network model and language were presented in the CODASYL Data Base Task Group’s 1971 report; hence it is sometimes called the DBTG model. Revised reports in 1978 and 1981 incorporated more recent concepts. In this appendix, rather than concentrating on the details of a particular CODASYL report, we present the general concepts behind net- work-type databases and use the term network model rather than CODASYL model or DBTG model. The original CODASYL/DBTG report used COBOL as the host language. Regardless of the host programming language, the basic database manipulation commands of the net- work model remain the same. Although the network model and the object-oriented data model are both navigational in nature, the data structuring capability of the network model is much more elaborate and allows for explicit insertion/deletion/modification semantic specification. However, it lacks some of the desirable features of the object mod- els that we discussed in Chapter 11, such as inheritance and encapsulation of structure and behavior. 1. The complete chapter on the network data model and about the IDMS system from the second edition of this book is available at http://www.awl.com/cseng/titles/0-8053-1755-4. This appendix is an edited excerpt of that chapter. E–1 Elmasri_APPC Page 2 Monday, April 3, 2006 3:40 PM E–2 Appendix E / An Overview of the Network Data Model E.1 Network Data Modeling Concepts There are two basic data structures in the network model: records and sets. -
Charles Bachman 1973 Turing Award Recipient Interviewed by Gardner Hendrie February 4, 2015 Lexington, Massachusetts Video Inter
Oral History of Charles W. (Charlie) Bachman Charles Bachman 1973 Turing Award Recipient Interviewed by Gardner Hendrie February 4, 2015 Lexington, Massachusetts Video Interview Transcript This video interview and its transcript were originally produced by the Computer History Museum as part of their Oral History activities and are copyrighted by them. CHM Reference number: X7400.2015 © 2006 Computer History Museum. The Computer History Museum has generously allowed the ACM to use these resources. Page 1 of 58 Oral History of Charles W. (Charlie) Bachman GH: Gardner Hendrie, interviewer CB: Charles Bachman, 1973 Turing Award Recipient GH: …Alright. We have here today with us Charlie Bachman, who’s graciously agreed to do an oral history for the Computer History Museum. Thank you very much Charlie. I think I’d like to start out with a very simple question: What is your earliest recollection of what you wanted to do when you grew up? CB: Well I guess the best answer, I don’t really think of any early recollection... GH: Okay. CB: …about that. I just kind of grew into it. GH: Alright. Now I have read that you decided to become a mechanical engineer relatively early. How did that come about? What influenced you to make that decision? And when did you make it? CB: Well I grew up in East Lansing, Michigan, which is the heart of General Motors and Ford and Chrysler, building automobiles. And so you thought engineers were people who designed cars and things that go with them, and that’s mainly mechanical engineering. So I just somehow thought that was the general course you took in engineering; if you didn’t know what kind of engineer you want to be, you do mechanical engineer. -
Database History
History of Database Systems JIANNAN WANG SIMON FRASER UNIVERSITY JIANNAN @ SFU 1 Database Systems in a Half Century (1960s – 2010s) When What Early 1960 – Early 1970 The Navigational Database Empire Mid 1970 – Mid 1980 The Database World War I Mid 1980 – Early 2000 The Relational Database Empire Mid 2000 – Now The Database World War II References. • https://en.wikipedia.org/wiki/Database#History • What Goes Around Comes Around (Michael Stonebraker, Joe Hellerstein) • 40 Years VLDB Panel JIANNAN @ SFU 2 The Navigational Database Empire (Early1960 – Early 1970) Data Model 1. How to organize data 2. How to access data Navigational Data Model 1. Organize data into a multi-dimensional space (i.e., A space of records) 2. Access data by following pointers between records Inventor: Charles Bachman 1. The 1973 ACM Turing Award 2. Turing Lecture: “The Programmer As Navigator” JIANNAN @ SFU 3 The Navigational Database Empire (Early1960 – Early 1970) Representative Navigational Database Systems ◦ Integrated Data Store (IDS), 1964, GE ◦ Information Management System (IMS), 1966, IBM ◦ Integrated Database Management System (IDMS), 1973, Goodrich CODASYL ◦ Short for “Conference/Committee on Data Systems Languages” ◦ Define navigational data model as standard database interface (1969) JIANNAN @ SFU 4 The Birth of Relational Model Ted Codd ◦ Born in 1923 ◦ PHD in 1965 ◦ “A Relational Model of Data for Large Shared Data Banks” in 1970 Relational Model ◦ Organize data into a collection of relations ◦ Access data by a declarative language (i.e., tell me what you want, not how to find it) Data Independence JIANNAN @ SFU 5 The Database World War I: Background One Slide (Navigational Model) ◦ Led by Charles Bachman (1973 ACM Turing Award) ◦ Has built mature systems ◦ Dominated the database market The other Slide (Relational Model) ◦ Led by Ted Codd (mathematical programmer, IBM) ◦ A theoretical paper with no system built ◦ Little support from IBM JIANNAN @ SFU 6 The Database World War I: Three Big Campaigns 1. -
A General Temporal Data Model and the Structured Population Event History Register
A General Temporal Data Model and the Structured Population Event History Register Samuel J. Clark* Abstract Longitudinal projects collect, store and manipulate large amounts of data that describe the histories of individual people, households and other units of analysis. These are temporal data that often describe inter-related histories, and consequently the structure of such data is complex and managing them can be difficult. Several existing data models successfully address this challenge but with significantly different solutions, and as a result, data stored using these different data models are hard to compare or merge. Moreover when ongoing projects use different data models, it is difficult to design an investigation that utilizes or collects data from more than one project because their individual data models are largely incompatible. Multi-site longitudinal investigations including large scale vaccine and behavioral intervention trials are and will become more common in the future making it an urgent matter to develop a standard temporal framework to guide the storage and manipulation of complex temporal data describing the histories of people (and households and other aggregations of people) living in multiple populations. This work begins to address this challenge by presenting 1) an abstract temporal data model that can represent an arbitrary range of inter-related temporal trajectories – the General Temporal Data Model or GTDM, 2) a relational database implementation of the GTDM that is able to store an arbitrary range of inter-related temporal trajectories with a single static relational schema – the Structured Population Event History Register or SPEHR, and 3) a relational database schema based on SPEHR that can store the contents of many SPHER-based databases allowing data from different longitudinal projects to be easily merged and managed together. -
Historical Reflections How Charles Bachman Invented the DBMS, a Foundation of Our Digital World
viewpoints VDOI:10.1145/2935880 Thomas Haigh Historical Reflections How Charles Bachman Invented the DBMS, a Foundation of Our Digital World His 1963 Integrated Data Store set the template for all subsequent database management systems. IFTY-THREE YEARS AGO a small team working to automate the business processes of the General Electric Company built the first database man- Fagement system. The Integrated Data Store—IDS—was designed by Charles W. Bachman, who won the ACM’s 1973 A.M. Turing Award for the accomplish- ment. Before General Electric, he had spent 10 years working in engineering, finance, production, and data process- ing for the Dow Chemical Company. He was the first ACM A.M. Turing Award winner without a Ph.D., the first with a background in engineer- ing rather than science, and the first to spend his entire career in industry rather than academia. Some stories, such as the work of Babbage and Lovelace, the creation of the first electronic computers, and the emergence of the personal computer industry have been told to the public again and again. They appear in popu- lar books, such as Walter Isaacson’s recent The Innovators: How a Group of Hackers, Geniuses and Geeks Created the Digital Revolution, and in museum exhibits on computing and innova- tion. In contrast, perhaps because da- tabase management systems are rarely Figure 1. This image, from a 1962 internal General Electric document, conveyed the idea COURTESY OF CHARLES W. BACHMAN AND THE CHARLES BABBAGE INSTITUTE. BABBAGE AND THE CHARLES BACHMAN W. OF CHARLES COURTESY experienced directly by the public, of random access storage using a set of “pigeon holes” in which data could be placed. -
Visual C# .NET Developer's Handbook
Visual C# .NET Developer's Handbook John Paul Mueller Associate Publisher: Richard Mills Acquisitions and Developmental Editor: Denise Santoro Lincoln Editor: Colleen Wheeler Strand Production Editor: Kylie Johnston Technical Editor: Ross Russell Mullen Graphic Illustrator: Tony Jonick Electronic Publishing Specialist: Nila Nichols Proofreaders: Amey Garber, Dave Nash, Laurie O'Connell, Yariv Rabinovitch, Nancy Riddiough Indexer: Ron Strauss CD Coordinator: Dan Mummert CD Technician: Kevin Ly Cover Designer: Carol Gorska/Gorska Design Cover Photographer: Glen Allison/PhotoDisc Copyright © 2002 SYBEX Inc., 1151 Marina Village Parkway, Alameda, CA 94501. World rights reserved. The author created reusable code in this publication expressly for reuse by readers. Sybex grants readers limited permission to reuse the code found in this publication or its accompanying CD-ROM so long as the author is attributed in any application containing the reusable code and the code itself is never distributed, posted online by electronic transmission, sold, or commercially exploited as a stand-alone product. Aside from this specific exception concerning reusable code, no part of this publication may be stored in a retrieval system, transmitted, or reproduced in any way, including but not limited to photocopy, photograph, magnetic, or other record, without the prior agreement and written permission of the publisher. Library of Congress Card Number: 2002103166 ISBN: 0-7821-4047-5 SYBEX and the SYBEX logo are either registered trademarks or trademarks of SYBEX Inc. in the United States and/or other countries.Screen reproductions produced with FullShot 99. FullShot 99 © 1991-1999 Inbit Incorporated. All rights reserved.FullShot is a trademark of Inbit Incorporated. The CD interface was created using Macromedia Director, COPYRIGHT 1994, 1997-1999 Macromedia Inc. -
Database Management Systems Ebooks for All Edition (
Database Management Systems eBooks For All Edition (www.ebooks-for-all.com) PDF generated using the open source mwlib toolkit. See http://code.pediapress.com/ for more information. PDF generated at: Sun, 20 Oct 2013 01:48:50 UTC Contents Articles Database 1 Database model 16 Database normalization 23 Database storage structures 31 Distributed database 33 Federated database system 36 Referential integrity 40 Relational algebra 41 Relational calculus 53 Relational database 53 Relational database management system 57 Relational model 59 Object-relational database 69 Transaction processing 72 Concepts 76 ACID 76 Create, read, update and delete 79 Null (SQL) 80 Candidate key 96 Foreign key 98 Unique key 102 Superkey 105 Surrogate key 107 Armstrong's axioms 111 Objects 113 Relation (database) 113 Table (database) 115 Column (database) 116 Row (database) 117 View (SQL) 118 Database transaction 120 Transaction log 123 Database trigger 124 Database index 130 Stored procedure 135 Cursor (databases) 138 Partition (database) 143 Components 145 Concurrency control 145 Data dictionary 152 Java Database Connectivity 154 XQuery API for Java 157 ODBC 163 Query language 169 Query optimization 170 Query plan 173 Functions 175 Database administration and automation 175 Replication (computing) 177 Database Products 183 Comparison of object database management systems 183 Comparison of object-relational database management systems 185 List of relational database management systems 187 Comparison of relational database management systems 190 Document-oriented database 213 Graph database 217 NoSQL 226 NewSQL 232 References Article Sources and Contributors 234 Image Sources, Licenses and Contributors 240 Article Licenses License 241 Database 1 Database A database is an organized collection of data. -
Sms208: Computer Appreciation for Managers
SMS208: COMPUTER APPRECIATION FOR MANAGERS NATIONAL OPEN UNIVERSITY OF NIGERIA SMS 208 COMPUTER APPRECIATION FOR MANAGERS COURSE GUIDE SMS 208 COMPUTER APPRECIATION FOR MANAGERS Course Developer Gerald C. Okeke Eco Communication Inc. Ikeja, Lagos Course Editor/Coordinator Adegbola, Abimbola Eunice National Open University of Nigeria Programme Leader Dr. O.J. Onwe National Open University of Nigeria NATIONAL OPEN UNIVERSITY OF NIGERIA 2 SMS 208 COMPUTER APPRECIATION FOR MANAGERS National Open University of Nigeria Headquarters 14/16 Ahmadu Bello Way Victoria Island Lagos Abuja Office No. 5 Dar es Salaam Street Off Aminu Kano Crescent Wuse II, Abuja Nigeria e-mail: [email protected] URL: www.nou.edu.ng Published by National Open University of Nigeria 2008 Printed 2008 ISBN: 978-058-198-7 All Rights Reserved 3 SMS 208 COMPUTER APPRECIATION FOR MANAGERS CONTENTS PAGE Introduction………………………………………………….. 1 Course Objectives…………………………………………… 1 Credit Units………………………………………………….. 2 Study Units………………………………………………….. 2 Course Assessment………………………………………….. 2 Introduction This course is designed to avail managers in business, governance and education with what computer is and its applications in carrying out their every day assignments. This course goes on to acquaint them with the basic component parts of a personal computer and the types available. The emphasis is for them to understand the application of computer in information technology and in information communications technology that translates to effectiveness and efficiency in business and -
Strikt Relationele Database Is Een Nobel Doel
Database SQL misschien het best haalbare in een feilbare wereld Strikt relationele database is een nobel doel Peter Verkooijen SQL zondigt tegen de regels van het relationele vanaf dag één besloten dubbele rijen toe te staan”, zegt Rick van model. Moeten we ons neerleggen bij de der Lans. “Dat is volgens mij de eerste grote discussie geweest. dominantie van SQL of zijn alternatieven Later is daar de discussie over de NULL-waarden bijgekomen. denkbaar? Alphora’s Dataphor is het enige Maar daar zijn de grondleggers van het relationele model het ook systeem dat de zegen van relationeel opper- nooit over eens geweest.” priester Chris Date heeft gekregen. De NULL-waarde introduceert een variant van drie waarden logica in het relationele model. “Dat is het fundamentele Dataphor ontstond uit puur pragmatische redenen. “We zijn probleem”, volgens Bryn Rhodes. “NULL is toegevoegd als vlag oorspronkelijk met database-applicaties begonnen”, zegt Bryn voor ontbrekende data, maar verstoort het logische systeem. Je Rhodes, hoofd ontwikkelaar van Alphora. “We liepen steeds tegen kunt NULL niet relateren met NULL. Problemen in SQL gaan dezelfde problemen aan waarvoor we steeds dezelfde code moes- verder dan alleen die NULL-waarden. Wij proberen met Dataphor ten schrijven. De beste manier om die problemen generiek op te zoveel mogelijk tekortkomingen te repareren als we kunnen.” lossen was het relationele model zo dicht mogelijk te benaderen.” Dataphor is het enige database-product waar Chris Date zich Alphora mengt zich met Dataphor in een oude, maar hardnekkige achter kan scharen. Dataphor of D4 is gebaseerd op Tutorial D uit discussie. SQL houdt zich niet strikt aan het relationele model. -
Databases Theoretical Introduction Contents
Databases Theoretical Introduction Contents 1 Databases 1 1.1 Database ................................................ 1 1.1.1 Terminology and overview .................................. 1 1.1.2 Applications .......................................... 2 1.1.3 General-purpose and special-purpose DBMSs ........................ 2 1.1.4 History ............................................ 2 1.1.5 Research ........................................... 6 1.1.6 Examples ........................................... 6 1.1.7 Design and modeling ..................................... 7 1.1.8 Languages ........................................... 9 1.1.9 Performance, security, and availability ............................ 10 1.1.10 See also ............................................ 12 1.1.11 References .......................................... 12 1.1.12 Further reading ........................................ 13 1.1.13 External links ......................................... 14 1.2 Schema migration ........................................... 14 1.2.1 Risks and Benefits ...................................... 14 1.2.2 Schema migration in agile software development ...................... 14 1.2.3 Available Tools ........................................ 15 1.2.4 References .......................................... 15 1.3 Star schema .............................................. 16 1.3.1 Model ............................................ 16 1.3.2 Benefits ............................................ 16 1.3.3 Disadvantages .......................................