Week 6
... primary and unique keys. Relationships: Relationships at the supertype level transform as usual. Relationships at subtype level are implemented as optional foreign-key columns. Integrity constraints: A check constraint is needed to ensure that for each particular subtype, all columns that come f ...
... primary and unique keys. Relationships: Relationships at the supertype level transform as usual. Relationships at subtype level are implemented as optional foreign-key columns. Integrity constraints: A check constraint is needed to ensure that for each particular subtype, all columns that come f ...
Database design theory, Part I
... Even once we have a set of attributes that uniquely identifies our tuple, the question remains whether that key is the only one possible for the relation. Suppose we had a more traditional student relation, which contained student UTorID, name, email address, and major. The attribute pair {UTorID, ...
... Even once we have a set of attributes that uniquely identifies our tuple, the question remains whether that key is the only one possible for the relation. Suppose we had a more traditional student relation, which contained student UTorID, name, email address, and major. The attribute pair {UTorID, ...
Provenance in Databases: Past, Current, and Future
... underlying algebraic structure of relational queries. Provenance is computed and aggregated according to the underlying algebraic operators used in query on an operator-by-operator basis. Data provenance is the focus of this paper and we shall elaborate more on data provenance in subsequent sections ...
... underlying algebraic structure of relational queries. Provenance is computed and aggregated according to the underlying algebraic operators used in query on an operator-by-operator basis. Data provenance is the focus of this paper and we shall elaborate more on data provenance in subsequent sections ...
Slide 1
... – Query Consistency – Advanced Backup and Recovery – Powerful Security – Flashback – Scale up SMPs – Scale out Clusters ...
... – Query Consistency – Advanced Backup and Recovery – Powerful Security – Flashback – Scale up SMPs – Scale out Clusters ...
- Courses - University of California, Berkeley
... • A SET is a string object that can have zero or more values, each of which must be chosen from a list of allowed values specified when the table is created. • SET column values that consist of multiple set members are specified with members separated by commas (‘,’) • For example, a column specifie ...
... • A SET is a string object that can have zero or more values, each of which must be chosen from a list of allowed values specified when the table is created. • SET column values that consist of multiple set members are specified with members separated by commas (‘,’) • For example, a column specifie ...
CS 7700 Transaction Design for Microsoft Access Database with
... The data in a ResultSet object is accessed through a cursor, which points to its current row of data in the ResultSet. When a ResultSet object is first created, the cursor is positioned before the first row. The next method moves the cursor to the next row. The ResultSet interface provides getter m ...
... The data in a ResultSet object is accessed through a cursor, which points to its current row of data in the ResultSet. When a ResultSet object is first created, the cursor is positioned before the first row. The next method moves the cursor to the next row. The ResultSet interface provides getter m ...
Chapter 9
... the database system. Undertaken at any time prior to logical design provided sufficient information is available regarding system requirements. Main steps to selecting a DBMS: ...
... the database system. Undertaken at any time prior to logical design provided sufficient information is available regarding system requirements. Main steps to selecting a DBMS: ...
CIS671-Knowledge Discovery and Data Mining
... operational DBs do not typically maintain – data consolidation: DS requires consolidation (aggregation, summarization) of data from heterogeneous sources – data quality: different sources typically use inconsistent data representations, codes and formats which have to be ...
... operational DBs do not typically maintain – data consolidation: DS requires consolidation (aggregation, summarization) of data from heterogeneous sources – data quality: different sources typically use inconsistent data representations, codes and formats which have to be ...
Database and Database Users Databases and Database Users
... need to change the description of STUDENT records in the catalog to reflect the inclusion of the new data item BirthDate; no programs are changed. The next time a DBMS program refers to the catalog, the new structure of STUDENT records will be accessed and used. In some types of database systems, su ...
... need to change the description of STUDENT records in the catalog to reflect the inclusion of the new data item BirthDate; no programs are changed. The next time a DBMS program refers to the catalog, the new structure of STUDENT records will be accessed and used. In some types of database systems, su ...
Document
... – if new product is ordered for order 1007 of existing customer, customer data must be re-entered, causing duplication ...
... – if new product is ordered for order 1007 of existing customer, customer data must be re-entered, causing duplication ...
The MapForce Platform for Data Integration
... region to be reported. These parameters flow into two database queries, and ultimately to the mapping output on the right side of the design, as defined by the connecting lines. The parameter values for region and product will be supplied by the user when the data mapping executes, but for design an ...
... region to be reported. These parameters flow into two database queries, and ultimately to the mapping output on the right side of the design, as defined by the connecting lines. The parameter values for region and product will be supplied by the user when the data mapping executes, but for design an ...
Document
... • as you work with the classes in your Java project, you will need to update the persistence.xml file to reflect the changes • right-click the persistence.xml file JPA ...
... • as you work with the classes in your Java project, you will need to update the persistence.xml file to reflect the changes • right-click the persistence.xml file JPA ...
A Talk on SQL
... details of actually processing the request In short one gets to say WHAT they want, and allow the application program to resolve the nitty-gritty details of HOW to get the results. In addition SQL syntax is "English-like" promoting quick learning of its constructs. SQL has been touted as providing d ...
... details of actually processing the request In short one gets to say WHAT they want, and allow the application program to resolve the nitty-gritty details of HOW to get the results. In addition SQL syntax is "English-like" promoting quick learning of its constructs. SQL has been touted as providing d ...
Final - NCC Education
... Explain the concept of redundancy in database design and provide ONE (1) example of the concept. Something is redundant if it is not needed (1 mark). It may be the case that, during the process of design, structures (entities, attributes, relationships) (1 mark) may have been created that are not re ...
... Explain the concept of redundancy in database design and provide ONE (1) example of the concept. Something is redundant if it is not needed (1 mark). It may be the case that, during the process of design, structures (entities, attributes, relationships) (1 mark) may have been created that are not re ...
Kroenke-Auer-DBP-e12-PPT-Chapter-04
... • They are used for querying, reporting, and data mining applications. • They are never updated (in the operational database sense—they may have new data imported from time to time). KROENKE AND AUER - DATABASE PROCESSING, 12th Edition © 2012 Pearson Prentice Hall ...
... • They are used for querying, reporting, and data mining applications. • They are never updated (in the operational database sense—they may have new data imported from time to time). KROENKE AND AUER - DATABASE PROCESSING, 12th Edition © 2012 Pearson Prentice Hall ...
IBM® Tivoli® Software
... 5. You can perform a quick test to confirm this configuration change by following an example similar to what is described below. 1. Utilizing a database sql tool, change a simple value in the reporting database. This example modifies a value from the Purchase Order Table update po set ponum = 'test1 ...
... 5. You can perform a quick test to confirm this configuration change by following an example similar to what is described below. 1. Utilizing a database sql tool, change a simple value in the reporting database. This example modifies a value from the Purchase Order Table update po set ponum = 'test1 ...
Slide 1
... value is in the result of either nested query • The comparison operator IN compares a value v with a set (or multi-set) of values V, and evaluates to TRUE if v is one of the elements in V • In general, we can have several levels of nested queries • A reference to an unqualified attribute refers to t ...
... value is in the result of either nested query • The comparison operator IN compares a value v with a set (or multi-set) of values V, and evaluates to TRUE if v is one of the elements in V • In general, we can have several levels of nested queries • A reference to an unqualified attribute refers to t ...
Default Temporary Tablespace
... Shared Pool Database Buffer Cache Redo Log Buffer Other structures (for example, lock and latch management, statistical data) ...
... Shared Pool Database Buffer Cache Redo Log Buffer Other structures (for example, lock and latch management, statistical data) ...
- Courses - University of California, Berkeley
... • Authorization rules to identify users and the actions they can perform • User-defined procedures (with rule systems or triggers) to define additional constraints or limitations in using the database • Encryption to encode sensitive data • Authentication schemes to positively identify a person atte ...
... • Authorization rules to identify users and the actions they can perform • User-defined procedures (with rule systems or triggers) to define additional constraints or limitations in using the database • Encryption to encode sensitive data • Authentication schemes to positively identify a person atte ...
Semantic Data Control
... Views can be updated only if they are derived from a single relation by selection and projection However, it is theoretically possible to automatically support updates of a larger class of views, e.g., joins ...
... Views can be updated only if they are derived from a single relation by selection and projection However, it is theoretically possible to automatically support updates of a larger class of views, e.g., joins ...