Database Configuration and Maintenance
... Configuring Files and Filegroups SQL Server uses two different types of files— data and transaction log files. Filegroups are a logical structure, defined within a database, that map a database and the objects contained within a database, to the data files on disk. Filegroups can contain more than o ...
... Configuring Files and Filegroups SQL Server uses two different types of files— data and transaction log files. Filegroups are a logical structure, defined within a database, that map a database and the objects contained within a database, to the data files on disk. Filegroups can contain more than o ...
Schema Objects
... INSERT INTO table2 VALUES (1); INSERT INTO table1(id, col1) VALUES (1, 1); INSERT INTO table1(id, col1) VALUES (1, 2); -- error –- referenced record does not exist in table2 DELETE FROM table2 WHERE id = 1; -- record removed -- from table1 ...
... INSERT INTO table2 VALUES (1); INSERT INTO table1(id, col1) VALUES (1, 1); INSERT INTO table1(id, col1) VALUES (1, 2); -- error –- referenced record does not exist in table2 DELETE FROM table2 WHERE id = 1; -- record removed -- from table1 ...
Chapter 12 FAQ
... Database Administration • The DBA has an allencompassing job. Both the Network Administrator and the Database Administrator have the task of maintaining and ...
... Database Administration • The DBA has an allencompassing job. Both the Network Administrator and the Database Administrator have the task of maintaining and ...
Document
... • Relatively slow compared with relational DBMS for processing large numbers of transactions • Hybrid object-relational DBMS: Provide capabilities of both OODBMS and relational DBMS ...
... • Relatively slow compared with relational DBMS for processing large numbers of transactions • Hybrid object-relational DBMS: Provide capabilities of both OODBMS and relational DBMS ...
Question 3: How is the concept of functional
... Example: For given two sets of attributes x and y, y is said to be functionally dependent on x, If a given value for each attribute in x uniquely determines the value of attributes in y. x is called the determinant of functional dependency (FD). FD is denoted as x -> y. ...
... Example: For given two sets of attributes x and y, y is said to be functionally dependent on x, If a given value for each attribute in x uniquely determines the value of attributes in y. x is called the determinant of functional dependency (FD). FD is denoted as x -> y. ...
Donwload Syallabus - MAHADEVI Institute of Technology
... Student’s performance will be evaluated through continuous assessment in the form of Class Tests, Assignments, Quizzes, Viva voce/Practical etc. There shall also be an examination at the end of each semester in theory subjects, practical and project. The distribution of marks for the class tests, qu ...
... Student’s performance will be evaluated through continuous assessment in the form of Class Tests, Assignments, Quizzes, Viva voce/Practical etc. There shall also be an examination at the end of each semester in theory subjects, practical and project. The distribution of marks for the class tests, qu ...
SQL Server Security Securing and Auditing DATABASE ACCESS
... http://en.wikipedia.org/wiki/Password_strength “The strength of a password is a function of length, complexity, and unpredictability.” ...
... http://en.wikipedia.org/wiki/Password_strength “The strength of a password is a function of length, complexity, and unpredictability.” ...
Configuring Automatic Database Space Expansion in
... administration tasks. More importantly, interruptions to business users - such as an ASE error SQL1105 caused by missing resources, for example - can be avoided because the database server can automatically obtain the space resources needed for continuous operation. The following sections explain wh ...
... administration tasks. More importantly, interruptions to business users - such as an ASE error SQL1105 caused by missing resources, for example - can be avoided because the database server can automatically obtain the space resources needed for continuous operation. The following sections explain wh ...
2.4. the database management system
... calculations in the table- structure based on the formula of our choice. Access was exclusively made for the storage and managing of the data. The aim of my lecture notes is to set forth the usage of the programme – Microsoft Access– as well as displaying the way it should be taught to the public, p ...
... calculations in the table- structure based on the formula of our choice. Access was exclusively made for the storage and managing of the data. The aim of my lecture notes is to set forth the usage of the programme – Microsoft Access– as well as displaying the way it should be taught to the public, p ...
Securing Data at Rest: Database Encryption Solution Using
... Even in-memory databases need to backup data and this data could end up in a persistent storage device in plaintext. Even many embedded devices that contain an embedded database hold sensitive data that must be protected. Encryption, the process of disguising data in such a way to hide its substance ...
... Even in-memory databases need to backup data and this data could end up in a persistent storage device in plaintext. Even many embedded devices that contain an embedded database hold sensitive data that must be protected. Encryption, the process of disguising data in such a way to hide its substance ...
Chapter 14: Query Optimization
... executing the following step until no more expressions can be found: for each expression found so far, use all applicable equivalence rules, and add newly generated expressions to the set of expressions found so far The above approach is very expensive in space and time Space requirements redu ...
... executing the following step until no more expressions can be found: for each expression found so far, use all applicable equivalence rules, and add newly generated expressions to the set of expressions found so far The above approach is very expensive in space and time Space requirements redu ...
Slides PPT
... Changes are made to user-defined metadata as a design is developed. SchemaEvolver tool compares generated schema with those previously stored. Depending on similarity weighting of closest match the outcome is: Exact match – Metadata conforms to an existing XML Schema Similar – Existing XML Schema mo ...
... Changes are made to user-defined metadata as a design is developed. SchemaEvolver tool compares generated schema with those previously stored. Depending on similarity weighting of closest match the outcome is: Exact match – Metadata conforms to an existing XML Schema Similar – Existing XML Schema mo ...
Querying and Learning in Probabilistic Databases
... Even though the query evaluation problem has been studied intensively in PDBs, for many classes of queries efficient ways of computing answers along with probabilities are not established yet. 3. Most importantly, the field of creating and updating PDBs still is in an early stage, where only very fe ...
... Even though the query evaluation problem has been studied intensively in PDBs, for many classes of queries efficient ways of computing answers along with probabilities are not established yet. 3. Most importantly, the field of creating and updating PDBs still is in an early stage, where only very fe ...
ppt - (Walid) Ben Ali
... • Used by relational databases to ensure that relationships between coupled tables remain consistent ...
... • Used by relational databases to ensure that relationships between coupled tables remain consistent ...
Introduction
... All our knowledge brings us nearer to our ignorance, All our ignorance brings us nearer to death, But nearness to death, no nearer to God. Where is the Life we have lost in living? Where is the wisdom we have lost in knowledge? Where is the knowledge we have lost in information? The cycles of Heaven ...
... All our knowledge brings us nearer to our ignorance, All our ignorance brings us nearer to death, But nearness to death, no nearer to God. Where is the Life we have lost in living? Where is the wisdom we have lost in knowledge? Where is the knowledge we have lost in information? The cycles of Heaven ...
SOLVED PAPERS OF ICS PART-2 (Computer Science) LAHORE
... A type of error that occurs due to poor logic of the programmer is known as logical error. 17. Difference between getch() and getche()? The getch() function is used to input single character from the user that is not displayed on the screen. getche() function displays the character on the screen ent ...
... A type of error that occurs due to poor logic of the programmer is known as logical error. 17. Difference between getch() and getche()? The getch() function is used to input single character from the user that is not displayed on the screen. getche() function displays the character on the screen ent ...
Database
... • Relatively slow compared with relational DBMS for processing large numbers of transactions • Hybrid object-relational DBMS: Provide capabilities of both OODBMS and relational DBMS ...
... • Relatively slow compared with relational DBMS for processing large numbers of transactions • Hybrid object-relational DBMS: Provide capabilities of both OODBMS and relational DBMS ...
Chapter13. Query Processing
... every block of outer relation. for each block Br of r do begin for each block Bs of s do begin for each tuple tr in Br do begin for each tuple ts in Bs do begin Check if (tr,ts) satisfy the join condition if they do, add tr • ts to the result. ...
... every block of outer relation. for each block Br of r do begin for each block Bs of s do begin for each tuple tr in Br do begin for each tuple ts in Bs do begin Check if (tr,ts) satisfy the join condition if they do, add tr • ts to the result. ...
A Case for Staged Database Systems
... user preferences [AH00]. Operators run as independent threads, using a central queue for scheduling. While the aforementioned architectures optimize the execution engine’s throughput by changing the invocation of relational operators, they do not exploit cache-related benefits. For example, eddies m ...
... user preferences [AH00]. Operators run as independent threads, using a central queue for scheduling. While the aforementioned architectures optimize the execution engine’s throughput by changing the invocation of relational operators, they do not exploit cache-related benefits. For example, eddies m ...
Relational model
The relational model for database management is an approach to managing data using a structure and language consistent with first-order predicate logic, first described in 1969 by Edgar F. Codd. In the relational model of a database, all data is represented in terms of tuples, grouped into relations. A database organized in terms of the relational model is a relational database.The purpose of the relational model is to provide a declarative method for specifying data and queries: users directly state what information the database contains and what information they want from it, and let the database management system software take care of describing data structures for storing the data and retrieval procedures for answering queries.Most relational databases use the SQL data definition and query language; these systems implement what can be regarded as an engineering approximation to the relational model. A table in an SQL database schema corresponds to a predicate variable; the contents of a table to a relation; key constraints, other constraints, and SQL queries correspond to predicates. However, SQL databases deviate from the relational model in many details, and Codd fiercely argued against deviations that compromise the original principles.