IOSR Journal of Computer Engineering (IOSR-JCE)
... proposes to take as input a target database and then generate and index a set of query forms offline [5]. At query time, a user with a question to be answered issues standard keyword search queries; but instead of returning tuples, the system returns forms relevant to the question. The user may then ...
... proposes to take as input a target database and then generate and index a set of query forms offline [5]. At query time, a user with a question to be answered issues standard keyword search queries; but instead of returning tuples, the system returns forms relevant to the question. The user may then ...
ppt
... transactions such that the consistency of the database is maintained while, at the same time, maximum degree of concurrency is achieved. ...
... transactions such that the consistency of the database is maintained while, at the same time, maximum degree of concurrency is achieved. ...
HP Vertica Analytics Platform 7.0.x Concepts Guide
... HP Vertica's unique approach to failure recovery is based on the distributed nature of a database. An HP Vertica database is said to be K-safe if any node can fail at any given time without causing the database to shut down. When the lost node comes back online and rejoins the database, it recovers ...
... HP Vertica's unique approach to failure recovery is based on the distributed nature of a database. An HP Vertica database is said to be K-safe if any node can fail at any given time without causing the database to shut down. When the lost node comes back online and rejoins the database, it recovers ...
Institutionen för datavetenskap Department of Computer and Information Science Yasser Rasheed
... and integrate them using statistical analysis. If data is well described and data access is flexible then it is possible to establish unexpected relationships among data. It also helps in the re-using of data from studies that have already been conducted which saves time, money and resources. In thi ...
... and integrate them using statistical analysis. If data is well described and data access is flexible then it is possible to establish unexpected relationships among data. It also helps in the re-using of data from studies that have already been conducted which saves time, money and resources. In thi ...
Mapping between Alloy specifications and database implementations
... matches that of most object-oriented languages, and thus can easily be enforced in the application layer. INDs allow us to specify inclusions between arbitrary projections of relations. In Alloy, projections can be specified by composing relations with signatures. For example, parent·Dir projects ou ...
... matches that of most object-oriented languages, and thus can easily be enforced in the application layer. INDs allow us to specify inclusions between arbitrary projections of relations. In Alloy, projections can be specified by composing relations with signatures. For example, parent·Dir projects ou ...
ppt
... lr: size of a tuple of r. fr: blocking factor of r — i.e., the number of tuples of r that fit into one block. V(A, r): number of distinct values that appear in r for attribute A; same as ...
... lr: size of a tuple of r. fr: blocking factor of r — i.e., the number of tuples of r that fit into one block. V(A, r): number of distinct values that appear in r for attribute A; same as ...
Fundamentals of Database Systems
... relational algebra operations as internal nodes. An execution of the query tree consists of executing an internal node operation whenever its operands are available and then replacing that internal node by the relation that results from executing the operation. Query graph: a graph data structure th ...
... relational algebra operations as internal nodes. An execution of the query tree consists of executing an internal node operation whenever its operands are available and then replacing that internal node by the relation that results from executing the operation. Query graph: a graph data structure th ...
cursor
... queries are not permitted in PSM. There are three ways to get the effect of a query: 1. Queries producing one value can be the expression in an assignment. 2. Single-row SELECT . . . INTO. 3. Cursors. ...
... queries are not permitted in PSM. There are three ways to get the effect of a query: 1. Queries producing one value can be the expression in an assignment. 2. Single-row SELECT . . . INTO. 3. Cursors. ...
HPE Vertica 7.1.x Concepts Guide
... It is possible for an HP Vertica database to have more than K nodes fail and still continue running safely, because the database continues to run as long as every data segment is available on at least one functioning cluster node. Potentially, up to half the nodes in a database with a K-safety level ...
... It is possible for an HP Vertica database to have more than K nodes fail and still continue running safely, because the database continues to run as long as every data segment is available on at least one functioning cluster node. Potentially, up to half the nodes in a database with a K-safety level ...
Element - Assignment Point
... by the actions within the xsl:template element xsl:value-of selects (outputs) specified values (here, customer-name) For elements that do not match any template Attributes and text contents are output as is Templates are recursively applied on subelements ...
... by the actions within the xsl:template element xsl:value-of selects (outputs) specified values (here, customer-name) For elements that do not match any template Attributes and text contents are output as is Templates are recursively applied on subelements ...
Preparing for and Tuning the SQL Query Engine on DB2 for i5/OS
... express or implied warranties in certain transactions, therefore, this statement may not apply to you. This information could include technical inaccuracies or typographical errors. Changes are periodically made to the information herein; these changes will be incorporated in new editions of the pub ...
... express or implied warranties in certain transactions, therefore, this statement may not apply to you. This information could include technical inaccuracies or typographical errors. Changes are periodically made to the information herein; these changes will be incorporated in new editions of the pub ...
Chs. 1 + 2
... Application programs are also needed to enforce the various rules (constraints), e.g. a student cannot take more than 6 courses at the same time. ...
... Application programs are also needed to enforce the various rules (constraints), e.g. a student cannot take more than 6 courses at the same time. ...
SQL Slides
... Note that we do not need to use the having clause, since we compute the temporary (view) relation result in the from clause, and the attributes of result can be used directly in the where clause. ...
... Note that we do not need to use the having clause, since we compute the temporary (view) relation result in the from clause, and the attributes of result can be used directly in the where clause. ...
Second Normal Form - Department of Computer Science
... Given a Relation R with attributes A, B and C where A and B are ...
... Given a Relation R with attributes A, B and C where A and B are ...
ppt - Avi Silberschatz
... Note that we do not need to use the having clause, since we compute the temporary (view) relation result in the from clause, and the attributes of result can be used directly in the where clause. ...
... Note that we do not need to use the having clause, since we compute the temporary (view) relation result in the from clause, and the attributes of result can be used directly in the where clause. ...
Chapter 4: SQL - Avi Silberschatz
... Note that we do not need to use the having clause, since we compute the temporary (view) relation result in the from clause, and the attributes of result can be used directly in the where clause. ...
... Note that we do not need to use the having clause, since we compute the temporary (view) relation result in the from clause, and the attributes of result can be used directly in the where clause. ...
Understanding and Selecting a Database Encryption
... Over the last two decades, database security has meant access controls and encryption. Access controls to gate who should and should not be allowed access to the database, and encryption to protect data at rest. The use of access control systems for databases is well documented, and the available so ...
... Over the last two decades, database security has meant access controls and encryption. Access controls to gate who should and should not be allowed access to the database, and encryption to protect data at rest. The use of access control systems for databases is well documented, and the available so ...
Views, Synonyms and Sequences
... • The view will also be created even if the system user does not have privileges to access the tables which a view references. • The new view will be unusable and is categorized as “created with errors.” • In order to create such a view, the system user must use the FORCE option of the CREATE VIEW c ...
... • The view will also be created even if the system user does not have privileges to access the tables which a view references. • The new view will be unusable and is categorized as “created with errors.” • In order to create such a view, the system user must use the FORCE option of the CREATE VIEW c ...