Data Warehouse Technologies
... Tool should only access to objects which are used for analysis Consistent reporting performance (performance should not decrease tremendously with the increase of dimensions) Client/Server Architecture Each dimension should be equally structural and operational. Dynamic Matrix handling Multi user su ...
... Tool should only access to objects which are used for analysis Consistent reporting performance (performance should not decrease tremendously with the increase of dimensions) Client/Server Architecture Each dimension should be equally structural and operational. Dynamic Matrix handling Multi user su ...
Lecture note 8
... Before ODBC, if an application needs to connect to a database, it has to use tailar made APIs for that particular database. Therefore, the program has to be changed if the database is changed, say from Oracle to Access. ODBC separates the application from the underlying database. The programmer ...
... Before ODBC, if an application needs to connect to a database, it has to use tailar made APIs for that particular database. Therefore, the program has to be changed if the database is changed, say from Oracle to Access. ODBC separates the application from the underlying database. The programmer ...
Data storage overview SQLite databases
... – Embedded systems in all kinds of industry, aeroplanes, … ...
... – Embedded systems in all kinds of industry, aeroplanes, … ...
XML - Rose
... and try to keep it up-to-date Usual method: periodic reconstruction of the warehouse, perhaps overnight Warehouse essential for analytic queries ...
... and try to keep it up-to-date Usual method: periodic reconstruction of the warehouse, perhaps overnight Warehouse essential for analytic queries ...
The Entity-Relationship Model
... Security Design – Identify different user groups and different roles played by various users. For each role, identify the parts of DB that they be able to access and the parts of DB they should not be allowed to access (chap 21) ...
... Security Design – Identify different user groups and different roles played by various users. For each role, identify the parts of DB that they be able to access and the parts of DB they should not be allowed to access (chap 21) ...
Chapter 9 Slides
... video, sound, voice mail, spreadsheets, etc. • RDBMSs store complex objects using special data types – Binary large objects (BLOBs) ...
... video, sound, voice mail, spreadsheets, etc. • RDBMSs store complex objects using special data types – Binary large objects (BLOBs) ...
What Is Relational Data Modeling?
... As a simple example, the (5)__________ yes or positive in data could come in many data value forms: different human languages (ja, si, da, yes), different computer languages (0, 1, ASCII codes), abbreviations (Y, N), full words (true, false), and even graphical symbols (+, -). A data value, such as ...
... As a simple example, the (5)__________ yes or positive in data could come in many data value forms: different human languages (ja, si, da, yes), different computer languages (0, 1, ASCII codes), abbreviations (Y, N), full words (true, false), and even graphical symbols (+, -). A data value, such as ...
Databases: Design, Implementation, and Management
... • To insert null value for a column, specify only the other columns or write null as the value • Can specify values for some columns, in any order, as long as values match order ...
... • To insert null value for a column, specify only the other columns or write null as the value • Can specify values for some columns, in any order, as long as values match order ...
View PDF
... of Entity-Relationship (ER) modelling. The chapter discussed the concepts of an entity, participation, recursive relationships, weak entities and strong entities. It also illustrated how these concepts can be represented in the ER diagrams. Improved computer speed and memory has, in recent years, tr ...
... of Entity-Relationship (ER) modelling. The chapter discussed the concepts of an entity, participation, recursive relationships, weak entities and strong entities. It also illustrated how these concepts can be represented in the ER diagrams. Improved computer speed and memory has, in recent years, tr ...
Resume
... database. Gathering, analyzing and normalizing requirements, Source & target system data analysis (RDBMS, hands-on SQL), Identifying Data Quality issues and recommending resolutions. Data Mapping, Data Extraction, Transformation and Load. Strong knowledge of design and development in Oracle 10 ...
... database. Gathering, analyzing and normalizing requirements, Source & target system data analysis (RDBMS, hands-on SQL), Identifying Data Quality issues and recommending resolutions. Data Mapping, Data Extraction, Transformation and Load. Strong knowledge of design and development in Oracle 10 ...
Integration of databases and World Wide Web based on Open
... browsers, but executed and replaced by the result of that execution (which is in most cases again HTML code). However, second approach has advantage in easier maintenance (code and HTML aren’t divided) and speed of execution (as no external programs are forked. All processing is done inside web ser ...
... browsers, but executed and replaced by the result of that execution (which is in most cases again HTML code). However, second approach has advantage in easier maintenance (code and HTML aren’t divided) and speed of execution (as no external programs are forked. All processing is done inside web ser ...
Entity Framework
... and retrieve objects. O/R mapping tool vendors claim 20-30% reduction in the code that needs to be written. Writing less code ...
... and retrieve objects. O/R mapping tool vendors claim 20-30% reduction in the code that needs to be written. Writing less code ...
A Logical Approach to Multidimensional Databases?
... step, independent of any speci c system but suitable for each. Second, in specifying analytical queries, the analysts often need to take care of tedious details, referring to the \physical" organization of data, rather than just to the essential, \logical" aspects. Finally, the integration with data ...
... step, independent of any speci c system but suitable for each. Second, in specifying analytical queries, the analysts often need to take care of tedious details, referring to the \physical" organization of data, rather than just to the essential, \logical" aspects. Finally, the integration with data ...
lock-X
... 4. Give a set of FDs for the relation schema R(A,B,C,D) with primary key AB under which R is in 1NF but not in 2NF. 5. Give a set of FDs for the relation schema R(A,B,C,D) with primary key AB under which R is in 2NF but not in 3NF. 6. Consider the relation schema R(A,B,C), which has the FD B->C. If ...
... 4. Give a set of FDs for the relation schema R(A,B,C,D) with primary key AB under which R is in 1NF but not in 2NF. 5. Give a set of FDs for the relation schema R(A,B,C,D) with primary key AB under which R is in 2NF but not in 3NF. 6. Consider the relation schema R(A,B,C), which has the FD B->C. If ...
Logical Design of Audit Information in Relational Databases
... allowed users to see data not as an arbitrary collection of files, but in more understandable terms. Database researchers developed another key concept called independence: The logical structure of the data became independent of the details of physical storage of data. Since now users could reorgani ...
... allowed users to see data not as an arbitrary collection of files, but in more understandable terms. Database researchers developed another key concept called independence: The logical structure of the data became independent of the details of physical storage of data. Since now users could reorgani ...
1.9 File Structure and Indexing - KV Institute of Management and
... "missing information and inapplicable information" that is systematic, distinct from all regular values (for example, "distinct from zero or any other number", in the case of numeric values), and independent of data type. It is also implied that such representations must be manipulated by the DBMS i ...
... "missing information and inapplicable information" that is systematic, distinct from all regular values (for example, "distinct from zero or any other number", in the case of numeric values), and independent of data type. It is also implied that such representations must be manipulated by the DBMS i ...
Introduction to Object Oriented Databases
... The hardware memory protection used most often relies on the computer's page table; this is the same table that the operating system uses to control virtual memory, and is usually very efficient. Although the figure shows only a single object being initialised, in practice an entire page's worth is ...
... The hardware memory protection used most often relies on the computer's page table; this is the same table that the operating system uses to control virtual memory, and is usually very efficient. Although the figure shows only a single object being initialised, in practice an entire page's worth is ...
SAS® and Relational Databases: What You Should Know Before You Code
... Not so in an RDBMS. Most RDBMS of any size have a database administrator who controls what goes into the database, the access people have and the procedure to add new structures and elements. The DBA has several tools to monitor the system and see who is accessing what in detail. A more refined shop ...
... Not so in an RDBMS. Most RDBMS of any size have a database administrator who controls what goes into the database, the access people have and the procedure to add new structures and elements. The DBA has several tools to monitor the system and see who is accessing what in detail. A more refined shop ...
Chapter 2
... A client program may connect to several DBMSs, sometimes called the data sources. In general, data sources can be files or other non-DBMS software that manages data. Other variations of clients are possible: e.g., in some object DBMSs, more functionality is transferred to clients including data dict ...
... A client program may connect to several DBMSs, sometimes called the data sources. In general, data sources can be files or other non-DBMS software that manages data. Other variations of clients are possible: e.g., in some object DBMSs, more functionality is transferred to clients including data dict ...
Database Intro - La Salle University
... When it comes time to implement the database and one is turning attributes into the corresponding fields, resist the temptation to use abbreviated field names. If you use descriptive field names, your implementation will be self-documenting – in that many people will know what you mean simply by the ...
... When it comes time to implement the database and one is turning attributes into the corresponding fields, resist the temptation to use abbreviated field names. If you use descriptive field names, your implementation will be self-documenting – in that many people will know what you mean simply by the ...
IT344TestBankandMultipleChoiceQuestions (1)
... 18.5 Give three alternative ways of evaluating a selection of the form σA=$1∧B=$2(r) if secondary indices are available on A and on B. 18.6 Suppose I store two dimensional points as the location attribute of a relation, and queries ask for tuples whose location is at exactly a given point. What sort ...
... 18.5 Give three alternative ways of evaluating a selection of the form σA=$1∧B=$2(r) if secondary indices are available on A and on B. 18.6 Suppose I store two dimensional points as the location attribute of a relation, and queries ask for tuples whose location is at exactly a given point. What sort ...
1. Basics of Database Management
... elements’ as in everyday speech and thinking. It was standardized in 1986. SQL= (command) words + grammar (regulations regarding use of words). SQL makes creation and query of relational database as well as retrieve of information stored in the ‘relations’ possible. There is no need to specify how t ...
... elements’ as in everyday speech and thinking. It was standardized in 1986. SQL= (command) words + grammar (regulations regarding use of words). SQL makes creation and query of relational database as well as retrieve of information stored in the ‘relations’ possible. There is no need to specify how t ...
Chapter 6 Database and Data Mining Security
... y The integrity of database elements is their correctness or accuracy. y This corrective action can be taken in three ways . y Field checks - activities that test for appropriate values in a position. y Access control y A change log - A change log lists every change made to the database; it contains ...
... y The integrity of database elements is their correctness or accuracy. y This corrective action can be taken in three ways . y Field checks - activities that test for appropriate values in a position. y Access control y A change log - A change log lists every change made to the database; it contains ...