Engineering Glossary

A set of transaction properties—atomicity, consistency, isolation, and durability—used to reason about database correctness under failure and concurrency.

An ASR model component that maps acoustic observations to probabilities or scores over phonetic, subword, or token representations.

The amount of memory allocated by an application per unit time, a key driver of garbage-collection pressure and memory bandwidth demand.

A circuit that samples an analog signal and maps its amplitude to discrete digital values at a defined resolution and sample rate.

A low-pass filter applied before sampling to attenuate frequency components that would otherwise alias into the representable spectrum.

A family of search techniques that trades exact nearest-neighbor guarantees for substantially faster similarity retrieval in high-dimensional vector spaces.

A face-recognition loss formulation that introduces an additive angular margin to produce more discriminative normalized face embeddings.

A programming model that modularizes cross-cutting behavior by applying advice at defined join points selected by pointcuts.

The set of reachable interfaces, components, privileges, data paths, and behaviors through which a system may be attacked.

The automated conversion of spoken audio into text, typically combining acoustic modeling, language constraints, decoding, and segmentation logic.

Oracle's built-in repository of periodic database performance snapshots used for workload, wait-event, SQL, and resource analysis.

A flow-control mechanism that constrains upstream work when downstream processing capacity cannot keep pace with the incoming load.

Application-defined key-value context propagated across service boundaries alongside distributed traces to carry correlation or business metadata.

A placeholder in an Oracle SQL statement whose runtime value is supplied separately, promoting statement reuse and reducing hard parsing when used appropriately.

The Oracle SGA region that caches database blocks in memory to reduce repeated physical reads from datafiles.

The Oracle RAC mechanism that transfers current or consistent database blocks between instance buffer caches over the private interconnect.

The property that memory accesses reuse nearby or recently accessed data so processor caches and prefetch mechanisms can serve more requests efficiently.

A robust multi-master serial communication bus widely used in automotive and embedded systems for priority-based frame transmission.