Comparison Summary By Martin Rennhackkamp DBMS Server Comparison Supplement‚ November 1996 An Analysis Of The Strengths And Weaknesses Of The Big Six Database Servers. In 1991 I performed a thorough evaluation and comparison of the four major DBMSs at the time: Informix‚ Ingres‚ Oracle‚ and Sybase. This comparison was done for a client building a huge distributed database application‚ currently in its second phase of d evelopment‚ with the first phase running successfully country-wide. At
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C h a p t e r 15 Object-Oriented Database Development L E A R N I N G O B J E C T I V E S After studying this chapter‚ you should be able to: ● Concisely define each of the following key terms: atomic literal‚ collection literal‚ set‚ bag‚ list‚ array‚ dictionary‚ structured literal‚ and extent. ● Create logical object-oriented database schemas using the object definition language (ODL). ● Transform conceptual UML class diagrams to logical ODL schemas by mapping classes (abstract and concrete)
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140 140 141 194 229 260 307 307 308 337 363 393 393 394 446 494 529 563 563 564 590 637 Preface 1. Introduction Text I. Data Models Introduction 2. Entity−Relationship Model 3. Relational Model II. Relational Databases Introduction 4. SQL 5. Other Relational Languages 6. Integrity and Security 7. Relational−Database Design III. Object−Based Databases and XML Introduction 8. Object−Oriented Databases 9. Object−Relational Databases 10. XML IV. Data Storage and Querying Introduction
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revisions of the SQL standard. * SQL Server version 1.0: SQL Server version 1.0 is a 16 bit server modeled in the year 1989 for supporting OS/2. * SQL Server version 1.1: SQL Server version 1.1 is also a 16 bit server designed in the year 1991 to support OS/2. * SQL Server version 4.2: SQL Server version 4.2 was released in the year 1992. SQL 4.2 is bundled with IBM OS/2 1.3 version. * SQL Server version 4.21: In the year 1993‚ Microsoft server 4.21 came into existence. SQL 4.21 was the
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The Internet‚ or better yet‚ the technologies used in the operation of the Internet‚ are tied into the design of the JDBC. The other dominant design basis for the JDBC is the database standard known as SQL. Hence‚ the JDBC is a fusion of three discrete computer areas: Java‚ Internet technology‚ and SQL. With the growing implementation of these Internet technologies in “closed” networks‚ called intranets‚ the time was right for the development of Java-based enterprise APIs. In this book‚ intranet and
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parameters to support ASM ASM Instance Monitoring using EM ASM Views Migrating from File system to ASM Miscellaneous Tips Q&A Data Softech Inc. Oracle 10g ASM 2 What is ASM ASM stands for Automatic Storage Management It is Oracle Cluster File System and Volume Manager Designed for Oracle Database Related Files Provide Storage management capabilities like striping as well as mirroring Data files Log files Archived files Control Files Not Certified for Trace Files ORACLE_HOME
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versions of the respective platforms; however‚ the functionality we are using is pretty fundamental and stable‚ so typically minor version differences do not lead to unexpected behavior differences. 1 SQL and Relational Algebra queries (26 points) Consider the schema given by the following two SQL CREATE statements. CREATE TABLE Enrolled (sid INTEGER NOT NULL‚ cid INTEGER NOT NULL‚ semesterid INTEGER NOT NULL‚ PRIMARY KEY (sid‚ cid‚ semesterid)); CREATE TABLE CourseOffering (cid INTEGER NOT
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unit of storage in an Oracle database? Correct 8. Identify‚ which of the following below are types of segments? You answered: All of the above Incorrect Correct answer: Data Segment 9. Which of the following segment is destroyed when the SQL statement is finished? Correct 10. Which of the following is the most probable use of an extent? You answered: Stores user data within the database Incorrect Correct answer: Minimize the amount of wasted (empty) storage 11. The basic memory
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a complex PL/SQL block‚ which of the following control structures can be used? A. If-Then-Else B. While loop C. GoTo D. Decode Answer :C 7. Select the VALID trigger type(s)? A. AFTER statement trigger B. INSERT row trigger C. DELETE row trigger D. UPDATE row trigger Answer : A 8. For what purposes are views used? A. To hide columns only B. To hide rows only C. To hide complicated SQL statements only D. All of the above are uses for SQL views. Ans
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Review Entity-Relationship Diagrams and the Relational Model CS 186‚ Fall 2007‚ Lecture 2 R & G‚ Chaps. 2&3 A relationship‚ I think‚ is like a shark‚ you know? It has to constantly move forward or it dies. And I think what we got on our hands is a dead shark. Woody Allen (from Annie Hall‚ 1979) • Why use a DBMS? OS provides RAM and disk Review • Why use a DBMS? OS provides RAM and disk – Concurrency – Recovery – Abstraction‚ Data Independence – Query Languages – Efficiency (for most tasks)
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