database systems using oracle ebook

... you are using an SPFILE: As oracle on node1 [oracle@node1 oracle]$ export ORACLE_HOME=/opt/oracle/product/11.1/si [oracle@node1 oracle]$ export ORACLE_SID=ERI [oracle@node1 oracle]$ $ORACLE_HOME/bin/sqlplus ... Shut the database down As oracle on node1 [oracle@node1 oracle]$ export ORACLE_HOME=/opt/oracle/product/11.1/si [oracle@node1 oracle]$ export ORACLE_SID=ERI [oracle@node1 oracle]$ $ORACLE_HOME/bin/sqlplus ... start on node2 As oracle on node2 [oracle@node2 oracle]$ export ORACLE_HOME=/opt/oracle/product/11.1/si [oracle@node2 oracle]$ export ORACLE_SID=ERI [oracle@node2 oracle]$ $ORACLE_HOME/bin/sqlplus

Ngày tải lên: 30/03/2014, 13:20

... Trang 1October, 2005 VITEC Database Systems Engineer Examination (Afternoon, Part 2) 1 Examination Time-14:30-16:30 (120 minutes) ... (1) Entity types are indicated using rectangles (2) The entity type name is written inside the rectangle (3) The relationship between entity types is indicated using a line (4) For a “1-to-1 ... Used in the Questions The notation for conceptual data models, relation schemas, and relational database table structures is given below This notation applies unless otherwise noted in the text

Ngày tải lên: 24/08/2012, 15:44

... user can simply modify relations to B-tree using any class of operators defined in the AM relation The only addition to the modify command is a clause "using class" which specifies what operator ... For example the com-mand modify box to B-tree on desc using area-op will allow the DBMS to provide optimized access on data of type box using the operators {AE,AL,AG} The same extension must ... computation Only a user-defined data type facil-ity allows such customization to occur Current data base systems implement hashing and B-trees as fast access paths for built-in data types Some user-defined

Ngày tải lên: 22/10/2013, 10:15

... Trang 1COP 4710: Database SystemsSpring 2004 Introduction to Database Systems – Part 2 BÀI 2, 1/2 ngày School of Electrical Engineering and ... Roles in the Database Environment Trang 4Database Designers• In large db design projects, we can distinguish between two types of designers: logical database designers and physical database designers ... the database • DML operations usually include the following: – insertion of new data into the database. – modification of data stored in the database. – retrieval of data contained in the database.

Ngày tải lên: 24/12/2013, 12:16

... object-oriented approach to database design that is emerging as a standard for object-oriented database systems Introduction to Data Modeling (cont.) Trang 8• The database design process can ... in the database, along with the constraints that are known to hold on this data 3 Logical Database Design: A DBMS must be selected to implement the database and to convert the conceptual database ... step that the database is normalized Normalization of a database is based upon some elegant and powerful mathematical theory We will discuss normalization later in the term 5 Physical Database Design:

Ngày tải lên: 24/12/2013, 12:16

... COP 4710: Database Systems (Day 5) Page 1 Mark Llewellyn COP 4710: Database Systems Spring 2004 Introduction to Data Modeling – Part 2 BÀI 5, 1 ngày COP 4710: Database Systems Spring 2004 ... Diagram COP 4710: Database Systems (Day 5) UML Class Diagram Page 29 Mark Llewellyn Correspondence of E-R & UML Class Diagrams... address country COP 4710: Database Systems (Day 5) Page ... Diagrams COP 4710: Database Systems. .. manages what tasks • The E-R diagram in the next slide illustrates how aggregation is represented in the E-R model COP 4710: Database Systems (Day 5)

Ngày tải lên: 24/12/2013, 12:16

... statements using + SQL: The language SQL is the principal query language for relational one of these three keywords database systems The current standard is called SQL-99 or SQL3 Com- mercial systems ... generation of relational database prototypes 1 Astrahan, 14 h,1 et a]., "System R: a relational approach t o data manage- ment," ACM Trcmsactions on Database Systems 1:2, pp 97-137, 1976 ... different speed the average price of a PC do it in general? Trang 6286 CHAPTER 6 THE DATABASE LANGUAGE SQL -5 DATABASE AIODIFIC.4TIOiS 287 n we may omit t h e list of attributes that follows t

Ngày tải lên: 24/12/2013, 12:17

... speaking, there are three basic types of control systems: (a) Man-made control systems (b) Natural, including biological-control systems (c) Control systems whose components are both man-made and ... in robotics, space-vehicle systems, aircraft autopilotsand controls, ship and marine control systems, intercontinental missile guidance systems, au-tomatic control systems for hydrofoils, surface-effect ... hydrofoils, surface-effect ships, and high-speed rail systems includ-ing the magnetic levitation systems 1.2.1 Examples of Control Systems Control systems find numerous and widespread applications

Ngày tải lên: 01/01/2014, 18:43

... Trang 1Journal of Sound and Vibration (2000) , 000–000Analysis of Mechanical Systems using Interval Computations applied to Finite Elements Methods. Olivier Dessombz, Fabrice Thouverez, ... the problem of mechanical systems in which parameters are uncertain and bounded Interval calculation is used to find an envelope of transfer functions for mechanical systems modeled with Finite ... solving linear systems of interval equations We will thenintroduce a new formulation of the problem, based on interval parameters which isadapted for the modeling of mechanical systems An adaptation

Ngày tải lên: 12/01/2014, 21:45

... network issues in an Oracledistributed database system Net8 All Oracle databases in a distributed database system use Oracle’s networkingsoftware, Net8, to facilitate inter-database communication ... in a distributed database is distinct from all other databases in the system and has its own global database name Oracle forms a database’s global database name by prefixing the database’s network ... remote SALES database Trang 27Connecting Between Oracle Server VersionsAn Oracle distributed database system can incorporate Oracle databases ofdifferent versions All supported releases of Oracle can

Ngày tải lên: 17/01/2014, 09:20

... Trang 1COP 4710: Database SystemsSchool of Electrical Engineering and Computer Science University of Central Florida ... be in 3NF but not in BCNF Trang 8• The basic goal of relational database design should be to ensure that every relation in the database is either in 3NF or BCNF update anomalies to make a significant ... key AB Third Normal Form (3NF) (cont.) Trang 4• What does 3NF do for us? Consider the following database: assign(flight, day, pilot-id, pilot-name) K = {flight day} F = {pilot-id → pilot-name,

Ngày tải lên: 21/01/2014, 18:20

... COP 4710: Database Systems (Day 12) Page 1 Mark Llewellyn COP 4710: Database Systems Spring 2004 Introduction to Normalization – Part 3 BÀI 12, 1/2 ngày COP 4710: Database Systems Spring ... and dependency preservation properties must be independently tested when using algorithm 3NF.2 COP 4710: Database Systems (Day 12) Page 12 Mark Llewellyn Algorithm #3 for Producing a 3NF ... of G + that allows us to know if G covers F COP 4710: Database Systems (Day 12) Page 15 Mark Llewellyn A Hugmongously Big Example Using Different Technique Let R = (A, B, C, D) F = {A→B,

Ngày tải lên: 21/01/2014, 18:20

... Trang 1COP 4710: Database Systems (Day 17) Page 1 Mark LlewellynCOP 4710: Database Systems Spring 2004 Introduction to SQL BÀI 13, 2 ngày COP 4710: Database Systems Spring 2004 Introduction ... the information in this set of notes Trang 5COP 4710: Database Systems (Day 17) Page 5 Mark LlewellynSQL • SQL is a complete relational database language in the sense that it contains both ... view Trang 7COP 4710: Database Systems (Day 17) Page 7 Mark LlewellynThe DDL Component Of SQL • Before you can use a RDMS two tasks must be completed: (1) create the database structure, and

Ngày tải lên: 21/01/2014, 18:20

... Trang 14Joining Database Tables• The ability to combine (join) tables on common attributes is perhaps the most important distinction between a relational database and other types of databases • ... joined relations. Trang 16Joining Database Tables (cont.)• If you do not specify a join condition in the WHERE clause, a Cartesian product results Using our sample database, the PRODUCT table contains ... Trang 1COP 4710: Database SystemsSchool of Electrical Engineering and Computer Science University of Central Florida

Ngày tải lên: 21/01/2014, 18:20

... Trang 1COP 4710: Database SystemsSchool of Electrical Engineering and Computer Science University of Central Florida ... created Typically this is either a tree or graph structure, called a query tree or query graph • Using the query tree or query graph the RDBMS must devise an execution strategy for retrieving ... of the query Query Optimizer execution plan Query Code Generator code to execute query Runt-time Database Processor query results Trang 4Query OptimizationTypically, no attempt is made to achieve

Ngày tải lên: 21/01/2014, 18:20

... represent objects. Also, modern object-relational database systems allow attributes of pointer type (called references), so even relational systems need the ability to represent pointers in ... can be followed using single machine instructions. In contrast, following a database address is much more time-consuming. \I-e need a table that translates from all those database addresses ... mem-addr database address memory address Figure 12.8: The translation table turns database addresses into their equiva- lents in memory To a~oid the cost of translating repeatedly from database

Ngày tải lên: 21/01/2014, 18:20

... structure," ACM Trans on Database Systems 9:l (1984), pp 38-71 10 P O'Xeil, "Model 204 architecture and performance," Proc Second Intl Workshop on High Performance Transaction Systems, Springer-Verlag, ... Proc Intl Conf on Very Large Databases (1987), pp 507-518 16 C Zaniolo, S Ceri, C Faloutsos, R T Snodgrass, V S Subrahmanian, and R Zicari: Advanced Database Systems, Morgan-Kaufmann, San ... "take the database down"; i.e., make it unavailable for the time it is being reloaded That situation may or may not be a problem, depending on the application For instance, many databases

Ngày tải lên: 21/01/2014, 18:20

... a copy of the database Similarly, a nonquiescent dump tries to make a copy of the database that existed when the dump began, but database activity may change many database elements ... transaction have been completed and stored on disk, then any database changes that the transaction may have made to the database are undone, and the database state is restored to what existed prior to ... an Update Record? If database elements are disk blocks, and an update record includes the old value of a database element (or both the old and new values of the database element as we

Ngày tải lên: 21/01/2014, 18:20

... Distributed Databases We shall now consider the elements of distributed database systems In a dis- tributed system, there are many, relatively autonomous processors that may participate in database ... "Locking primitives in a database system," J ACM 30:l (19831, pp 55-79 8 H.-T Kung and J T Robinson, "Optimistic concurrency control,.' ACM Trans on Database Systems 6:2 (1981), pp 312-326 ... control by multiple versions," ACM Trans on Database Systems 9:l (1984), pp 89- This chapter also incllldes an introduction t o distributed databases IVe focus on ho1v to lock elements that

Ngày tải lên: 26/01/2014, 15:20

... also %rehouse Database 2 Database address 579-580, 582 Database administrator 10 Database element 879, 957 Database management system 1 910 Database programming 1, 15 17 Database schema ... rethinking the nay database systems are to be used to provide snch insights abo~it the data. Below are some of tlie applications and problems that are being addressed using very large amounts ... 910 Database programming 1, 15 17 Database schema See Relational database schema Database state See State, of a database Data-definition language 10 292 See also ODL, Schema Datalog

Ngày tải lên: 26/01/2014, 15:20