EPICS_IOC_database
... Fixed length strings maximum useful length is 40 characters Enumerated/menu choices select one of up to 16 strings stored as a short integer Arrays of any of the above types ...
... Fixed length strings maximum useful length is 40 characters Enumerated/menu choices select one of up to 16 strings stored as a short integer Arrays of any of the above types ...
Chapter A: Network Model
... Locates the first database record of type
belonging to the current .
To locate the other members of a set,k we use
...
... Locates the first database record of type
Chapter 19. Special Topics
... each user may have authority to read only part of the data and to write only part of the data. User authority may correspond to entire files or relations, but it may also correspond only to parts of files or relations. Local autonomy suggests site-level authorization control in a ...
... each user may have authority to read only part of the data and to write only part of the data. User authority may correspond to entire files or relations, but it may also correspond only to parts of files or relations. Local autonomy suggests site-level authorization control in a ...
Hierarchical Model
... If the relationship depositor is one to one, then the link depositor has ...
... If the relationship depositor is one to one, then the link depositor has ...
Chapter B: Hierarchical Model
... If the relationship depositor is one to one, then the link depositor has ...
... If the relationship depositor is one to one, then the link depositor has ...
Chapter B: Hierarchical Model
... If the relationship depositor is one to one, then the link depositor has ...
... If the relationship depositor is one to one, then the link depositor has ...
ppt
... Vertically partition relations to isolate the data that is accessed most often -- only fetch needed information. E.g., split account into two, (account-number, branch-name) and (account-number, balance). – Branch-name need not be fetched unless required Improve performance by storing a denormali ...
... Vertically partition relations to isolate the data that is accessed most often -- only fetch needed information. E.g., split account into two, (account-number, branch-name) and (account-number, balance). – Branch-name need not be fetched unless required Improve performance by storing a denormali ...
s - CSE, IIT Bombay
... (a) Load si into memory and build an in-memory hash index on it using the join attribute. This hash index uses a different hash function than the earlier one h. (b) Read the tuples in ri from the disk one by one. For each tuple tr locate each matching tuple ts in si using the inmemory hash index. Ou ...
... (a) Load si into memory and build an in-memory hash index on it using the join attribute. This hash index uses a different hash function than the earlier one h. (b) Read the tuples in ri from the disk one by one. For each tuple tr locate each matching tuple ts in si using the inmemory hash index. Ou ...
A,r
... Database System Concepts, 5th Ed. ©Silberschatz, Korth and Sudarshan See www.db-book.com for conditions on re-use ...
... Database System Concepts, 5th Ed. ©Silberschatz, Korth and Sudarshan See www.db-book.com for conditions on re-use ...
Evolutionary History and Adaptive Significance of Respiratory
... Figure 1. Leg membrane phenotype variation. Tracings of photographs of the ventral side of the meral segment of walking legs from four species, showing occurrence of leg membranes (areas shaded by black). Legs are arranged leg 1 to leg 3, top to bottom, for each species. Species are (A) Petrolisthes ...
... Figure 1. Leg membrane phenotype variation. Tracings of photographs of the ventral side of the meral segment of walking legs from four species, showing occurrence of leg membranes (areas shaded by black). Legs are arranged leg 1 to leg 3, top to bottom, for each species. Species are (A) Petrolisthes ...
Chapter 14: Concurrency Control
... timestamp(Q), then Ti is attempting to write an obsolete value of {Q}. Hence, rather than rolling back Ti as the timestamp ordering protocol would have done, this {write} operation can be ignored. Otherwise this protocol is the same as the timestamp ordering ...
... timestamp(Q), then Ti is attempting to write an obsolete value of {Q}. Hence, rather than rolling back Ti as the timestamp ordering protocol would have done, this {write} operation can be ignored. Otherwise this protocol is the same as the timestamp ordering ...
Snails - Esc20.net
... widespread of all animals and are surpassed only by the insects in their variety of living forms. One of their secrets of success is adaptability; snails can now be found in almost any permanent freshwater or marine environment, and some have also adapted to life on land. Characteristics: Snails eas ...
... widespread of all animals and are surpassed only by the insects in their variety of living forms. One of their secrets of success is adaptability; snails can now be found in almost any permanent freshwater or marine environment, and some have also adapted to life on land. Characteristics: Snails eas ...
Chapter 7: Relational Database Design
... customer, with depositor as the outer relation. Let customer have a primary B+-tree index on the join attribute customer-name, which contains 20 entries in each index node. Since customer has 10,000 tuples, the height of the tree is 4, and one more access is needed to find the actual data ...
... customer, with depositor as the outer relation. Let customer have a primary B+-tree index on the join attribute customer-name, which contains 20 entries in each index node. Since customer has 10,000 tuples, the height of the tree is 4, and one more access is needed to find the actual data ...
Fundamentals of Database Systems
... Search Methods for Complex Selection: S9. Conjunctive selection by intersection of record pointers: This method is possible if secondary indexes are available on all (or some of) the fields involved in equality comparison conditions in the conjunctive condition and if the indexes include record po ...
... Search Methods for Complex Selection: S9. Conjunctive selection by intersection of record pointers: This method is possible if secondary indexes are available on all (or some of) the fields involved in equality comparison conditions in the conjunctive condition and if the indexes include record po ...
Transactions
... possibly updates various data items. E.g. transaction to transfer $50 from account A to account B: 1. read(A) 2. A := A – 50 3. write(A) 4. read(B) 5. B := B + 50 6. write(B) ...
... possibly updates various data items. E.g. transaction to transfer $50 from account A to account B: 1. read(A) 2. A := A – 50 3. write(A) 4. read(B) 5. B := B + 50 6. write(B) ...
Introduction to DB
... will see an inconsistent database (the sum A + B will be less than it should be). ...
... will see an inconsistent database (the sum A + B will be less than it should be). ...
Sunshine Reading Club
... This keeps the snail cool, and stops its soft, wet body from drying out. During the day, the snail hides from many of its enemies. It also hides from the sun. The Roman snail eats leaves and plants. Snails have a very unusual way of eating. A snail has thousands and thousands of tiny, sharp teeth on ...
... This keeps the snail cool, and stops its soft, wet body from drying out. During the day, the snail hides from many of its enemies. It also hides from the sun. The Roman snail eats leaves and plants. Snails have a very unusual way of eating. A snail has thousands and thousands of tiny, sharp teeth on ...
PPTX
... causes for a particular phenomenon, in some places in the text, but we have no data, yet, to verify our gutfeeling. – And yes, it is quite possible that our correlations hide cofounding variables. ...
... causes for a particular phenomenon, in some places in the text, but we have no data, yet, to verify our gutfeeling. – And yes, it is quite possible that our correlations hide cofounding variables. ...
Hierarchical Model
... possible transformations are a special case of this one transformation. To transform the E-R diagram of Figure B.6a into a tree-structure diagram, we take these steps: 1. Create two separate tree-structure diagrams, T1 and T2 , each of which has the customer and account record types. In tree T1 , cu ...
... possible transformations are a special case of this one transformation. To transform the E-R diagram of Figure B.6a into a tree-structure diagram, we take these steps: 1. Create two separate tree-structure diagrams, T1 and T2 , each of which has the customer and account record types. In tree T1 , cu ...